31617520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:135

約数の個数: 160

約数和(自身を含む): 88565760

約数和(自身を除く): 56948240

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 31, 38, 40, 44, 55, 61, 62, 76, 80, 88, 95, 110, 122, 124, 152, 155, 176, 190, 209, 220, 244, 248, 304, 305, 310, 341, 380, 418, 440, 488, 496, 589, 610, 620, 671, 682, 760, 836, 880, 976, 1045, 1159, 1178, 1220, 1240, 1342, 1364, 1520, 1672, 1705, 1891, 2090, 2318, 2356, 2440, 2480, 2684, 2728, 2945, 3344, 3355, 3410, 3782, 4180, 4636, 4712, 4880, 5368, 5456, 5795, 5890, 6479, 6710, 6820, 7564, 8360, 9272, 9424, 9455, 10736, 11590, 11780, 12749, 12958, 13420, 13640, 15128, 16720, 18544, 18910, 20801, 23180, 23560, 25498, 25916, 26840, 27280, 30256, 32395, 35929, 37820, 41602, 46360, 47120, 50996, 51832, 53680, 63745, 64790, 71858, 75640, 83204, 92720, 101992, 103664, 104005, 127490, 129580, 143716, 151280, 166408, 179645, 203984, 208010, 254980, 259160, 287432, 332816, 359290, 395219, 416020, 509960, 518320, 574864, 718580, 790438, 832040, 1019920, 1437160, 1580876, 1664080, 1976095, 2874320, 3161752, 3952190, 6323504, 7904380, 15808760, 31617520]

約数ペア:

[(1, 31617520), (2, 15808760), (4, 7904380), (5, 6323504), (8, 3952190), (10, 3161752), (11, 2874320), (16, 1976095), (19, 1664080), (20, 1580876), (22, 1437160), (31, 1019920), (38, 832040), (40, 790438), (44, 718580), (55, 574864), (61, 518320), (62, 509960), (76, 416020), (80, 395219), (88, 359290), (95, 332816), (110, 287432), (122, 259160), (124, 254980), (152, 208010), (155, 203984), (176, 179645), (190, 166408), (209, 151280), (220, 143716), (244, 129580), (248, 127490), (304, 104005), (305, 103664), (310, 101992), (341, 92720), (380, 83204), (418, 75640), (440, 71858), (488, 64790), (496, 63745), (589, 53680), (610, 51832), (620, 50996), (671, 47120), (682, 46360), (760, 41602), (836, 37820), (880, 35929), (976, 32395), (1045, 30256), (1159, 27280), (1178, 26840), (1220, 25916), (1240, 25498), (1342, 23560), (1364, 23180), (1520, 20801), (1672, 18910), (1705, 18544), (1891, 16720), (2090, 15128), (2318, 13640), (2356, 13420), (2440, 12958), (2480, 12749), (2684, 11780), (2728, 11590), (2945, 10736), (3344, 9455), (3355, 9424), (3410, 9272), (3782, 8360), (4180, 7564), (4636, 6820), (4712, 6710), (4880, 6479), (5368, 5890), (5456, 5795)]