28203890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^3\times {\mathrm{13}}^1\times {\mathrm{163}}^1$

素因数の和:216

約数の個数: 64

約数和(自身を含む): 60504192

約数和(自身を除く): 32300302

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 121, 130, 143, 163, 242, 286, 326, 605, 715, 815, 1210, 1331, 1430, 1573, 1630, 1793, 2119, 2662, 3146, 3586, 4238, 6655, 7865, 8965, 10595, 13310, 15730, 17303, 17930, 19723, 21190, 23309, 34606, 39446, 46618, 86515, 98615, 116545, 173030, 197230, 216953, 233090, 256399, 433906, 512798, 1084765, 1281995, 2169530, 2563990, 2820389, 5640778, 14101945, 28203890]

約数ペア:

[(1, 28203890), (2, 14101945), (5, 5640778), (10, 2820389), (11, 2563990), (13, 2169530), (22, 1281995), (26, 1084765), (55, 512798), (65, 433906), (110, 256399), (121, 233090), (130, 216953), (143, 197230), (163, 173030), (242, 116545), (286, 98615), (326, 86515), (605, 46618), (715, 39446), (815, 34606), (1210, 23309), (1331, 21190), (1430, 19723), (1573, 17930), (1630, 17303), (1793, 15730), (2119, 13310), (2662, 10595), (3146, 8965), (3586, 7865), (4238, 6655)]