20764144720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{409}}^1\times {\mathrm{1861}}^1$

素因数の和:2325

約数の個数: 160

約数和(自身を含む): 54526510080

約数和(自身を除く): 33762365360

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 62, 80, 88, 110, 124, 155, 176, 220, 248, 310, 341, 409, 440, 496, 620, 682, 818, 880, 1240, 1364, 1636, 1705, 1861, 2045, 2480, 2728, 3272, 3410, 3722, 4090, 4499, 5456, 6544, 6820, 7444, 8180, 8998, 9305, 12679, 13640, 14888, 16360, 17996, 18610, 20471, 22495, 25358, 27280, 29776, 32720, 35992, 37220, 40942, 44990, 50716, 57691, 63395, 71984, 74440, 81884, 89980, 101432, 102355, 115382, 126790, 139469, 148880, 163768, 179960, 202864, 204710, 230764, 253580, 278938, 288455, 327536, 359920, 409420, 461528, 507160, 557876, 576910, 634601, 697345, 761149, 818840, 923056, 1014320, 1115752, 1153820, 1269202, 1394690, 1522298, 1637680, 2231504, 2307640, 2538404, 2789380, 3044596, 3173005, 3805745, 4615280, 5076808, 5578760, 6089192, 6346010, 7611490, 8372639, 10153616, 11157520, 12178384, 12692020, 15222980, 16745278, 23595619, 25384040, 30445960, 33490556, 41863195, 47191238, 50768080, 60891920, 66981112, 83726390, 94382476, 117978095, 133962224, 167452780, 188764952, 235956190, 259551809, 334905560, 377529904, 471912380, 519103618, 669811120, 943824760, 1038207236, 1297759045, 1887649520, 2076414472, 2595518090, 4152828944, 5191036180, 10382072360, 20764144720]

約数ペア:

[(1, 20764144720), (2, 10382072360), (4, 5191036180), (5, 4152828944), (8, 2595518090), (10, 2076414472), (11, 1887649520), (16, 1297759045), (20, 1038207236), (22, 943824760), (31, 669811120), (40, 519103618), (44, 471912380), (55, 377529904), (62, 334905560), (80, 259551809), (88, 235956190), (110, 188764952), (124, 167452780), (155, 133962224), (176, 117978095), (220, 94382476), (248, 83726390), (310, 66981112), (341, 60891920), (409, 50768080), (440, 47191238), (496, 41863195), (620, 33490556), (682, 30445960), (818, 25384040), (880, 23595619), (1240, 16745278), (1364, 15222980), (1636, 12692020), (1705, 12178384), (1861, 11157520), (2045, 10153616), (2480, 8372639), (2728, 7611490), (3272, 6346010), (3410, 6089192), (3722, 5578760), (4090, 5076808), (4499, 4615280), (5456, 3805745), (6544, 3173005), (6820, 3044596), (7444, 2789380), (8180, 2538404), (8998, 2307640), (9305, 2231504), (12679, 1637680), (13640, 1522298), (14888, 1394690), (16360, 1269202), (17996, 1153820), (18610, 1115752), (20471, 1014320), (22495, 923056), (25358, 818840), (27280, 761149), (29776, 697345), (32720, 634601), (35992, 576910), (37220, 557876), (40942, 507160), (44990, 461528), (50716, 409420), (57691, 359920), (63395, 327536), (71984, 288455), (74440, 278938), (81884, 253580), (89980, 230764), (101432, 204710), (102355, 202864), (115382, 179960), (126790, 163768), (139469, 148880)]