178065020

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{101}}^1\times {\mathrm{257}}^1$

素因数の和:388

約数の個数: 96

約数和(自身を含む): 442108800

約数和(自身を除く): 264043780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 101, 140, 196, 202, 245, 257, 343, 404, 490, 505, 514, 686, 707, 980, 1010, 1028, 1285, 1372, 1414, 1715, 1799, 2020, 2570, 2828, 3430, 3535, 3598, 4949, 5140, 6860, 7070, 7196, 8995, 9898, 12593, 14140, 17990, 19796, 24745, 25186, 25957, 34643, 35980, 49490, 50372, 51914, 62965, 69286, 88151, 98980, 103828, 125930, 129785, 138572, 173215, 176302, 181699, 251860, 259570, 346430, 352604, 363398, 440755, 519140, 692860, 726796, 881510, 908495, 1271893, 1763020, 1816990, 2543786, 3633980, 5087572, 6359465, 8903251, 12718930, 17806502, 25437860, 35613004, 44516255, 89032510, 178065020]

約数ペア:

[(1, 178065020), (2, 89032510), (4, 44516255), (5, 35613004), (7, 25437860), (10, 17806502), (14, 12718930), (20, 8903251), (28, 6359465), (35, 5087572), (49, 3633980), (70, 2543786), (98, 1816990), (101, 1763020), (140, 1271893), (196, 908495), (202, 881510), (245, 726796), (257, 692860), (343, 519140), (404, 440755), (490, 363398), (505, 352604), (514, 346430), (686, 259570), (707, 251860), (980, 181699), (1010, 176302), (1028, 173215), (1285, 138572), (1372, 129785), (1414, 125930), (1715, 103828), (1799, 98980), (2020, 88151), (2570, 69286), (2828, 62965), (3430, 51914), (3535, 50372), (3598, 49490), (4949, 35980), (5140, 34643), (6860, 25957), (7070, 25186), (7196, 24745), (8995, 19796), (9898, 17990), (12593, 14140)]