262201720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{409}}^1$

素因数の和:509

約数の個数: 128

約数和(自身を含む): 680140800

約数和(自身を除く): 417939080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 47, 55, 62, 88, 94, 110, 124, 155, 188, 220, 235, 248, 310, 341, 376, 409, 440, 470, 517, 620, 682, 818, 940, 1034, 1240, 1364, 1457, 1636, 1705, 1880, 2045, 2068, 2585, 2728, 2914, 3272, 3410, 4090, 4136, 4499, 5170, 5828, 6820, 7285, 8180, 8998, 10340, 11656, 12679, 13640, 14570, 16027, 16360, 17996, 19223, 20680, 22495, 25358, 29140, 32054, 35992, 38446, 44990, 50716, 58280, 63395, 64108, 76892, 80135, 89980, 96115, 101432, 126790, 128216, 139469, 153784, 160270, 179960, 192230, 211453, 253580, 278938, 320540, 384460, 422906, 507160, 557876, 595913, 641080, 697345, 768920, 845812, 1057265, 1115752, 1191826, 1394690, 1691624, 2114530, 2383652, 2789380, 2979565, 4229060, 4767304, 5578760, 5959130, 6555043, 8458120, 11918260, 13110086, 23836520, 26220172, 32775215, 52440344, 65550430, 131100860, 262201720]

約数ペア:

[(1, 262201720), (2, 131100860), (4, 65550430), (5, 52440344), (8, 32775215), (10, 26220172), (11, 23836520), (20, 13110086), (22, 11918260), (31, 8458120), (40, 6555043), (44, 5959130), (47, 5578760), (55, 4767304), (62, 4229060), (88, 2979565), (94, 2789380), (110, 2383652), (124, 2114530), (155, 1691624), (188, 1394690), (220, 1191826), (235, 1115752), (248, 1057265), (310, 845812), (341, 768920), (376, 697345), (409, 641080), (440, 595913), (470, 557876), (517, 507160), (620, 422906), (682, 384460), (818, 320540), (940, 278938), (1034, 253580), (1240, 211453), (1364, 192230), (1457, 179960), (1636, 160270), (1705, 153784), (1880, 139469), (2045, 128216), (2068, 126790), (2585, 101432), (2728, 96115), (2914, 89980), (3272, 80135), (3410, 76892), (4090, 64108), (4136, 63395), (4499, 58280), (5170, 50716), (5828, 44990), (6820, 38446), (7285, 35992), (8180, 32054), (8998, 29140), (10340, 25358), (11656, 22495), (12679, 20680), (13640, 19223), (14570, 17996), (16027, 16360)]