28534220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{907}}^1$

素因数の和:951

約数の個数: 72

約数和(自身を含む): 71009232

約数和(自身を除く): 42475012

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 121, 130, 143, 220, 242, 260, 286, 484, 572, 605, 715, 907, 1210, 1430, 1573, 1814, 2420, 2860, 3146, 3628, 4535, 6292, 7865, 9070, 9977, 11791, 15730, 18140, 19954, 23582, 31460, 39908, 47164, 49885, 58955, 99770, 109747, 117910, 129701, 199540, 219494, 235820, 259402, 438988, 518804, 548735, 648505, 1097470, 1297010, 1426711, 2194940, 2594020, 2853422, 5706844, 7133555, 14267110, 28534220]

約数ペア:

[(1, 28534220), (2, 14267110), (4, 7133555), (5, 5706844), (10, 2853422), (11, 2594020), (13, 2194940), (20, 1426711), (22, 1297010), (26, 1097470), (44, 648505), (52, 548735), (55, 518804), (65, 438988), (110, 259402), (121, 235820), (130, 219494), (143, 199540), (220, 129701), (242, 117910), (260, 109747), (286, 99770), (484, 58955), (572, 49885), (605, 47164), (715, 39908), (907, 31460), (1210, 23582), (1430, 19954), (1573, 18140), (1814, 15730), (2420, 11791), (2860, 9977), (3146, 9070), (3628, 7865), (4535, 6292)]