20672784

素因数分解:

$2^4\times 3^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{421}}^1$

素因数の和:477

約数の個数: 120

約数和(自身を含む): 65305344

約数和(自身を除く): 44632560

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 16, 18, 22, 24, 31, 33, 36, 44, 48, 62, 66, 72, 88, 93, 99, 124, 132, 144, 176, 186, 198, 248, 264, 279, 341, 372, 396, 421, 496, 528, 558, 682, 744, 792, 842, 1023, 1116, 1263, 1364, 1488, 1584, 1684, 2046, 2232, 2526, 2728, 3069, 3368, 3789, 4092, 4464, 4631, 5052, 5456, 6138, 6736, 7578, 8184, 9262, 10104, 12276, 13051, 13893, 15156, 16368, 18524, 20208, 24552, 26102, 27786, 30312, 37048, 39153, 41679, 49104, 52204, 55572, 60624, 74096, 78306, 83358, 104408, 111144, 117459, 143561, 156612, 166716, 208816, 222288, 234918, 287122, 313224, 333432, 430683, 469836, 574244, 626448, 666864, 861366, 939672, 1148488, 1292049, 1722732, 1879344, 2296976, 2584098, 3445464, 5168196, 6890928, 10336392, 20672784]

約数ペア:

[(1, 20672784), (2, 10336392), (3, 6890928), (4, 5168196), (6, 3445464), (8, 2584098), (9, 2296976), (11, 1879344), (12, 1722732), (16, 1292049), (18, 1148488), (22, 939672), (24, 861366), (31, 666864), (33, 626448), (36, 574244), (44, 469836), (48, 430683), (62, 333432), (66, 313224), (72, 287122), (88, 234918), (93, 222288), (99, 208816), (124, 166716), (132, 156612), (144, 143561), (176, 117459), (186, 111144), (198, 104408), (248, 83358), (264, 78306), (279, 74096), (341, 60624), (372, 55572), (396, 52204), (421, 49104), (496, 41679), (528, 39153), (558, 37048), (682, 30312), (744, 27786), (792, 26102), (842, 24552), (1023, 20208), (1116, 18524), (1263, 16368), (1364, 15156), (1488, 13893), (1584, 13051), (1684, 12276), (2046, 10104), (2232, 9262), (2526, 8184), (2728, 7578), (3069, 6736), (3368, 6138), (3789, 5456), (4092, 5052), (4464, 4631)]