77966980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{42839}}^1$

素因数の和:42868

約数の個数: 48

約数和(自身を含む): 201519360

約数和(自身を除く): 123552380

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 42839, 85678, 171356, 214195, 299873, 428390, 556907, 599746, 856780, 1113814, 1199492, 1499365, 2227628, 2784535, 2998730, 3898349, 5569070, 5997460, 7796698, 11138140, 15593396, 19491745, 38983490, 77966980]

約数ペア:

[(1, 77966980), (2, 38983490), (4, 19491745), (5, 15593396), (7, 11138140), (10, 7796698), (13, 5997460), (14, 5569070), (20, 3898349), (26, 2998730), (28, 2784535), (35, 2227628), (52, 1499365), (65, 1199492), (70, 1113814), (91, 856780), (130, 599746), (140, 556907), (182, 428390), (260, 299873), (364, 214195), (455, 171356), (910, 85678), (1820, 42839)]