819872080

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{181}}^1\times {\mathrm{1381}}^1$

素因数の和:1616

約数の個数: 80

約数和(自身を含む): 1964905488

約数和(自身を除く): 1145033408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 181, 205, 328, 362, 410, 656, 724, 820, 905, 1381, 1448, 1640, 1810, 2762, 2896, 3280, 3620, 5524, 6905, 7240, 7421, 11048, 13810, 14480, 14842, 22096, 27620, 29684, 37105, 55240, 56621, 59368, 74210, 110480, 113242, 118736, 148420, 226484, 249961, 283105, 296840, 452968, 499922, 566210, 593680, 905936, 999844, 1132420, 1249805, 1999688, 2264840, 2499610, 3999376, 4529680, 4999220, 9998440, 10248401, 19996880, 20496802, 40993604, 51242005, 81987208, 102484010, 163974416, 204968020, 409936040, 819872080]

約数ペア:

[(1, 819872080), (2, 409936040), (4, 204968020), (5, 163974416), (8, 102484010), (10, 81987208), (16, 51242005), (20, 40993604), (40, 20496802), (41, 19996880), (80, 10248401), (82, 9998440), (164, 4999220), (181, 4529680), (205, 3999376), (328, 2499610), (362, 2264840), (410, 1999688), (656, 1249805), (724, 1132420), (820, 999844), (905, 905936), (1381, 593680), (1448, 566210), (1640, 499922), (1810, 452968), (2762, 296840), (2896, 283105), (3280, 249961), (3620, 226484), (5524, 148420), (6905, 118736), (7240, 113242), (7421, 110480), (11048, 74210), (13810, 59368), (14480, 56621), (14842, 55240), (22096, 37105), (27620, 29684)]