154918780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{13151}}^1$

素因数の和:13210

約数の個数: 48

約数和(自身を含む): 353525760

約数和(自身を除く): 198606980

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 124, 155, 190, 310, 380, 589, 620, 1178, 2356, 2945, 5890, 11780, 13151, 26302, 52604, 65755, 131510, 249869, 263020, 407681, 499738, 815362, 999476, 1249345, 1630724, 2038405, 2498690, 4076810, 4997380, 7745939, 8153620, 15491878, 30983756, 38729695, 77459390, 154918780]

約数ペア:

[(1, 154918780), (2, 77459390), (4, 38729695), (5, 30983756), (10, 15491878), (19, 8153620), (20, 7745939), (31, 4997380), (38, 4076810), (62, 2498690), (76, 2038405), (95, 1630724), (124, 1249345), (155, 999476), (190, 815362), (310, 499738), (380, 407681), (589, 263020), (620, 249869), (1178, 131510), (2356, 65755), (2945, 52604), (5890, 26302), (11780, 13151)]