78991640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{21701}}^1$

素因数の和:21732

約数の個数: 64

約数和(自身を含む): 218756160

約数和(自身を除く): 139764520

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 21701, 43402, 86804, 108505, 151907, 173608, 217010, 282113, 303814, 434020, 564226, 607628, 759535, 868040, 1128452, 1215256, 1410565, 1519070, 1974791, 2256904, 2821130, 3038140, 3949582, 5642260, 6076280, 7899164, 9873955, 11284520, 15798328, 19747910, 39495820, 78991640]

約数ペア:

[(1, 78991640), (2, 39495820), (4, 19747910), (5, 15798328), (7, 11284520), (8, 9873955), (10, 7899164), (13, 6076280), (14, 5642260), (20, 3949582), (26, 3038140), (28, 2821130), (35, 2256904), (40, 1974791), (52, 1519070), (56, 1410565), (65, 1215256), (70, 1128452), (91, 868040), (104, 759535), (130, 607628), (140, 564226), (182, 434020), (260, 303814), (280, 282113), (364, 217010), (455, 173608), (520, 151907), (728, 108505), (910, 86804), (1820, 43402), (3640, 21701)]