156980900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{641}}^1$

素因数の和:765

約数の個数: 72

約数和(自身を含む): 356643840

約数和(自身を除く): 199662940

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 79, 100, 124, 155, 158, 310, 316, 395, 620, 641, 775, 790, 1282, 1550, 1580, 1975, 2449, 2564, 3100, 3205, 3950, 4898, 6410, 7900, 9796, 12245, 12820, 16025, 19871, 24490, 32050, 39742, 48980, 50639, 61225, 64100, 79484, 99355, 101278, 122450, 198710, 202556, 244900, 253195, 397420, 496775, 506390, 993550, 1012780, 1265975, 1569809, 1987100, 2531950, 3139618, 5063900, 6279236, 7849045, 15698090, 31396180, 39245225, 78490450, 156980900]

約数ペア:

[(1, 156980900), (2, 78490450), (4, 39245225), (5, 31396180), (10, 15698090), (20, 7849045), (25, 6279236), (31, 5063900), (50, 3139618), (62, 2531950), (79, 1987100), (100, 1569809), (124, 1265975), (155, 1012780), (158, 993550), (310, 506390), (316, 496775), (395, 397420), (620, 253195), (641, 244900), (775, 202556), (790, 198710), (1282, 122450), (1550, 101278), (1580, 99355), (1975, 79484), (2449, 64100), (2564, 61225), (3100, 50639), (3205, 48980), (3950, 39742), (4898, 32050), (6410, 24490), (7900, 19871), (9796, 16025), (12245, 12820)]