78117520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2423}}^1$

素因数の和:2480

約数の個数: 80

約数和(自身を含む): 201987072

約数和(自身を除く): 123869552

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1612, 2015, 2423, 2480, 3224, 4030, 4846, 6448, 8060, 9692, 12115, 16120, 19384, 24230, 31499, 32240, 38768, 48460, 62998, 75113, 96920, 125996, 150226, 157495, 193840, 251992, 300452, 314990, 375565, 503984, 600904, 629980, 751130, 976469, 1201808, 1259960, 1502260, 1952938, 2519920, 3004520, 3905876, 4882345, 6009040, 7811752, 9764690, 15623504, 19529380, 39058760, 78117520]

約数ペア:

[(1, 78117520), (2, 39058760), (4, 19529380), (5, 15623504), (8, 9764690), (10, 7811752), (13, 6009040), (16, 4882345), (20, 3905876), (26, 3004520), (31, 2519920), (40, 1952938), (52, 1502260), (62, 1259960), (65, 1201808), (80, 976469), (104, 751130), (124, 629980), (130, 600904), (155, 503984), (208, 375565), (248, 314990), (260, 300452), (310, 251992), (403, 193840), (496, 157495), (520, 150226), (620, 125996), (806, 96920), (1040, 75113), (1240, 62998), (1612, 48460), (2015, 38768), (2423, 32240), (2480, 31499), (3224, 24230), (4030, 19384), (4846, 16120), (6448, 12115), (8060, 9692)]