21787410

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{317}}^1$

素因数の和:435

約数の個数: 64

約数和(自身を含む): 54950400

約数和(自身を除く): 33162990

約数列:

[1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 79, 87, 145, 158, 174, 237, 290, 317, 395, 435, 474, 634, 790, 870, 951, 1185, 1585, 1902, 2291, 2370, 3170, 4582, 4755, 6873, 9193, 9510, 11455, 13746, 18386, 22910, 25043, 27579, 34365, 45965, 50086, 55158, 68730, 75129, 91930, 125215, 137895, 150258, 250430, 275790, 375645, 726247, 751290, 1452494, 2178741, 3631235, 4357482, 7262470, 10893705, 21787410]

約数ペア:

[(1, 21787410), (2, 10893705), (3, 7262470), (5, 4357482), (6, 3631235), (10, 2178741), (15, 1452494), (29, 751290), (30, 726247), (58, 375645), (79, 275790), (87, 250430), (145, 150258), (158, 137895), (174, 125215), (237, 91930), (290, 75129), (317, 68730), (395, 55158), (435, 50086), (474, 45965), (634, 34365), (790, 27579), (870, 25043), (951, 22910), (1185, 18386), (1585, 13746), (1902, 11455), (2291, 9510), (2370, 9193), (3170, 6873), (4582, 4755)]