78689780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{751}}^1$

素因数の和:817

約数の個数: 72

約数和(自身を含む): 184955904

約数和(自身を除く): 106266124

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 169, 260, 310, 338, 403, 620, 676, 751, 806, 845, 1502, 1612, 1690, 2015, 3004, 3380, 3755, 4030, 5239, 7510, 8060, 9763, 10478, 15020, 19526, 20956, 23281, 26195, 39052, 46562, 48815, 52390, 93124, 97630, 104780, 116405, 126919, 195260, 232810, 253838, 302653, 465620, 507676, 605306, 634595, 1210612, 1269190, 1513265, 2538380, 3026530, 3934489, 6053060, 7868978, 15737956, 19672445, 39344890, 78689780]

約数ペア:

[(1, 78689780), (2, 39344890), (4, 19672445), (5, 15737956), (10, 7868978), (13, 6053060), (20, 3934489), (26, 3026530), (31, 2538380), (52, 1513265), (62, 1269190), (65, 1210612), (124, 634595), (130, 605306), (155, 507676), (169, 465620), (260, 302653), (310, 253838), (338, 232810), (403, 195260), (620, 126919), (676, 116405), (751, 104780), (806, 97630), (845, 93124), (1502, 52390), (1612, 48815), (1690, 46562), (2015, 39052), (3004, 26195), (3380, 23281), (3755, 20956), (4030, 19526), (5239, 15020), (7510, 10478), (8060, 9763)]