261801650

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{109}}^1\times {\mathrm{397}}^1$

素因数の和:540

約数の個数: 72

約数和(自身を含む): 541514820

約数和(自身を除く): 279713170

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 109, 110, 121, 218, 242, 275, 397, 545, 550, 605, 794, 1090, 1199, 1210, 1985, 2398, 2725, 3025, 3970, 4367, 5450, 5995, 6050, 8734, 9925, 11990, 13189, 19850, 21835, 26378, 29975, 43273, 43670, 48037, 59950, 65945, 86546, 96074, 109175, 131890, 216365, 218350, 240185, 329725, 432730, 476003, 480370, 659450, 952006, 1081825, 1200925, 2163650, 2380015, 2401850, 4760030, 5236033, 10472066, 11900075, 23800150, 26180165, 52360330, 130900825, 261801650]

約数ペア:

[(1, 261801650), (2, 130900825), (5, 52360330), (10, 26180165), (11, 23800150), (22, 11900075), (25, 10472066), (50, 5236033), (55, 4760030), (109, 2401850), (110, 2380015), (121, 2163650), (218, 1200925), (242, 1081825), (275, 952006), (397, 659450), (545, 480370), (550, 476003), (605, 432730), (794, 329725), (1090, 240185), (1199, 218350), (1210, 216365), (1985, 131890), (2398, 109175), (2725, 96074), (3025, 86546), (3970, 65945), (4367, 59950), (5450, 48037), (5995, 43670), (6050, 43273), (8734, 29975), (9925, 26378), (11990, 21835), (13189, 19850)]