21663110

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:261

約数の個数: 64

約数和(自身を含む): 47001600

約数和(自身を除く): 25338490

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 62, 67, 70, 134, 149, 155, 217, 298, 310, 335, 434, 469, 670, 745, 938, 1043, 1085, 1490, 2077, 2086, 2170, 2345, 4154, 4619, 4690, 5215, 9238, 9983, 10385, 10430, 14539, 19966, 20770, 23095, 29078, 32333, 46190, 49915, 64666, 69881, 72695, 99830, 139762, 145390, 161665, 309473, 323330, 349405, 618946, 698810, 1547365, 2166311, 3094730, 4332622, 10831555, 21663110]

約数ペア:

[(1, 21663110), (2, 10831555), (5, 4332622), (7, 3094730), (10, 2166311), (14, 1547365), (31, 698810), (35, 618946), (62, 349405), (67, 323330), (70, 309473), (134, 161665), (149, 145390), (155, 139762), (217, 99830), (298, 72695), (310, 69881), (335, 64666), (434, 49915), (469, 46190), (670, 32333), (745, 29078), (938, 23095), (1043, 20770), (1085, 19966), (1490, 14539), (2077, 10430), (2086, 10385), (2170, 9983), (2345, 9238), (4154, 5215), (4619, 4690)]