20613664

素因数分解:

$2^5\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{229}}^1$

素因数の和:365

約数の個数: 48

約数和(自身を含む): 42600600

約数和(自身を除く): 21986936

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 97, 116, 194, 229, 232, 388, 458, 464, 776, 916, 928, 1552, 1832, 2813, 3104, 3664, 5626, 6641, 7328, 11252, 13282, 22213, 22504, 26564, 44426, 45008, 53128, 88852, 90016, 106256, 177704, 212512, 355408, 644177, 710816, 1288354, 2576708, 5153416, 10306832, 20613664]

約数ペア:

[(1, 20613664), (2, 10306832), (4, 5153416), (8, 2576708), (16, 1288354), (29, 710816), (32, 644177), (58, 355408), (97, 212512), (116, 177704), (194, 106256), (229, 90016), (232, 88852), (388, 53128), (458, 45008), (464, 44426), (776, 26564), (916, 22504), (928, 22213), (1552, 13282), (1832, 11252), (2813, 7328), (3104, 6641), (3664, 5626)]