81769660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:140

約数の個数: 144

約数和(自身を含む): 217857024

約数和(自身を除く): 136087364

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 43, 47, 68, 70, 85, 86, 94, 119, 140, 170, 172, 188, 215, 235, 238, 289, 301, 329, 340, 430, 470, 476, 578, 595, 602, 658, 731, 799, 860, 940, 1156, 1190, 1204, 1316, 1445, 1462, 1505, 1598, 1645, 2021, 2023, 2380, 2890, 2924, 3010, 3196, 3290, 3655, 3995, 4042, 4046, 5117, 5593, 5780, 6020, 6580, 7310, 7990, 8084, 8092, 10105, 10115, 10234, 11186, 12427, 13583, 14147, 14620, 15980, 20210, 20230, 20468, 22372, 24854, 25585, 27166, 27965, 28294, 34357, 40420, 40460, 49708, 51170, 54332, 55930, 56588, 62135, 67915, 68714, 70735, 86989, 95081, 102340, 111860, 124270, 135830, 137428, 141470, 171785, 173978, 190162, 240499, 248540, 271660, 282940, 343570, 347956, 380324, 434945, 475405, 480998, 584069, 687140, 869890, 950810, 961996, 1168138, 1202495, 1739780, 1901620, 2336276, 2404990, 2920345, 4088483, 4809980, 5840690, 8176966, 11681380, 16353932, 20442415, 40884830, 81769660]

約数ペア:

[(1, 81769660), (2, 40884830), (4, 20442415), (5, 16353932), (7, 11681380), (10, 8176966), (14, 5840690), (17, 4809980), (20, 4088483), (28, 2920345), (34, 2404990), (35, 2336276), (43, 1901620), (47, 1739780), (68, 1202495), (70, 1168138), (85, 961996), (86, 950810), (94, 869890), (119, 687140), (140, 584069), (170, 480998), (172, 475405), (188, 434945), (215, 380324), (235, 347956), (238, 343570), (289, 282940), (301, 271660), (329, 248540), (340, 240499), (430, 190162), (470, 173978), (476, 171785), (578, 141470), (595, 137428), (602, 135830), (658, 124270), (731, 111860), (799, 102340), (860, 95081), (940, 86989), (1156, 70735), (1190, 68714), (1204, 67915), (1316, 62135), (1445, 56588), (1462, 55930), (1505, 54332), (1598, 51170), (1645, 49708), (2021, 40460), (2023, 40420), (2380, 34357), (2890, 28294), (2924, 27965), (3010, 27166), (3196, 25585), (3290, 24854), (3655, 22372), (3995, 20468), (4042, 20230), (4046, 20210), (5117, 15980), (5593, 14620), (5780, 14147), (6020, 13583), (6580, 12427), (7310, 11186), (7990, 10234), (8084, 10115), (8092, 10105)]