221578980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{75367}}^1$

素因数の和:75393

約数の個数: 72

約数和(自身を含む): 721723968

約数和(自身を除く): 500144988

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 75367, 150734, 226101, 301468, 376835, 452202, 527569, 753670, 904404, 1055138, 1130505, 1507340, 1582707, 2110276, 2261010, 2637845, 3165414, 3692983, 4522020, 5275690, 6330828, 7385966, 7913535, 10551380, 11078949, 14771932, 15827070, 18464915, 22157898, 31654140, 36929830, 44315796, 55394745, 73859660, 110789490, 221578980]

約数ペア:

[(1, 221578980), (2, 110789490), (3, 73859660), (4, 55394745), (5, 44315796), (6, 36929830), (7, 31654140), (10, 22157898), (12, 18464915), (14, 15827070), (15, 14771932), (20, 11078949), (21, 10551380), (28, 7913535), (30, 7385966), (35, 6330828), (42, 5275690), (49, 4522020), (60, 3692983), (70, 3165414), (84, 2637845), (98, 2261010), (105, 2110276), (140, 1582707), (147, 1507340), (196, 1130505), (210, 1055138), (245, 904404), (294, 753670), (420, 527569), (490, 452202), (588, 376835), (735, 301468), (980, 226101), (1470, 150734), (2940, 75367)]