31142280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19963}}^1$

素因数の和:19990

約数の個数: 64

約数和(自身を含む): 100618560

約数和(自身を除く): 69476280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 19963, 39926, 59889, 79852, 99815, 119778, 159704, 199630, 239556, 259519, 299445, 399260, 479112, 519038, 598890, 778557, 798520, 1038076, 1197780, 1297595, 1557114, 2076152, 2395560, 2595190, 3114228, 3892785, 5190380, 6228456, 7785570, 10380760, 15571140, 31142280]

約数ペア:

[(1, 31142280), (2, 15571140), (3, 10380760), (4, 7785570), (5, 6228456), (6, 5190380), (8, 3892785), (10, 3114228), (12, 2595190), (13, 2395560), (15, 2076152), (20, 1557114), (24, 1297595), (26, 1197780), (30, 1038076), (39, 798520), (40, 778557), (52, 598890), (60, 519038), (65, 479112), (78, 399260), (104, 299445), (120, 259519), (130, 239556), (156, 199630), (195, 159704), (260, 119778), (312, 99815), (390, 79852), (520, 59889), (780, 39926), (1560, 19963)]