65128520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{991}}^1$

素因数の和:1086

約数の個数: 64

約数和(自身を含む): 154275840

約数和(自身を除く): 89147320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 53, 62, 106, 124, 155, 212, 248, 265, 310, 424, 530, 620, 991, 1060, 1240, 1643, 1982, 2120, 3286, 3964, 4955, 6572, 7928, 8215, 9910, 13144, 16430, 19820, 30721, 32860, 39640, 52523, 61442, 65720, 105046, 122884, 153605, 210092, 245768, 262615, 307210, 420184, 525230, 614420, 1050460, 1228840, 1628213, 2100920, 3256426, 6512852, 8141065, 13025704, 16282130, 32564260, 65128520]

約数ペア:

[(1, 65128520), (2, 32564260), (4, 16282130), (5, 13025704), (8, 8141065), (10, 6512852), (20, 3256426), (31, 2100920), (40, 1628213), (53, 1228840), (62, 1050460), (106, 614420), (124, 525230), (155, 420184), (212, 307210), (248, 262615), (265, 245768), (310, 210092), (424, 153605), (530, 122884), (620, 105046), (991, 65720), (1060, 61442), (1240, 52523), (1643, 39640), (1982, 32860), (2120, 30721), (3286, 19820), (3964, 16430), (4955, 13144), (6572, 9910), (7928, 8215)]