77871380

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:201

約数の個数: 96

約数和(自身を含む): 179988480

約数和(自身を除く): 102117100

約数列:

[1, 2, 4, 5, 10, 20, 29, 31, 58, 61, 62, 71, 116, 122, 124, 142, 145, 155, 244, 284, 290, 305, 310, 355, 580, 610, 620, 710, 899, 1220, 1420, 1769, 1798, 1891, 2059, 2201, 3538, 3596, 3782, 4118, 4331, 4402, 4495, 7076, 7564, 8236, 8662, 8804, 8845, 8990, 9455, 10295, 11005, 17324, 17690, 17980, 18910, 20590, 21655, 22010, 35380, 37820, 41180, 43310, 44020, 54839, 63829, 86620, 109678, 125599, 127658, 134261, 219356, 251198, 255316, 268522, 274195, 319145, 502396, 537044, 548390, 627995, 638290, 671305, 1096780, 1255990, 1276580, 1342610, 2511980, 2685220, 3893569, 7787138, 15574276, 19467845, 38935690, 77871380]

約数ペア:

[(1, 77871380), (2, 38935690), (4, 19467845), (5, 15574276), (10, 7787138), (20, 3893569), (29, 2685220), (31, 2511980), (58, 1342610), (61, 1276580), (62, 1255990), (71, 1096780), (116, 671305), (122, 638290), (124, 627995), (142, 548390), (145, 537044), (155, 502396), (244, 319145), (284, 274195), (290, 268522), (305, 255316), (310, 251198), (355, 219356), (580, 134261), (610, 127658), (620, 125599), (710, 109678), (899, 86620), (1220, 63829), (1420, 54839), (1769, 44020), (1798, 43310), (1891, 41180), (2059, 37820), (2201, 35380), (3538, 22010), (3596, 21655), (3782, 20590), (4118, 18910), (4331, 17980), (4402, 17690), (4495, 17324), (7076, 11005), (7564, 10295), (8236, 9455), (8662, 8990), (8804, 8845)]