209939940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{166619}}^1$

素因数の和:166641

約数の個数: 72

約数和(自身を含む): 727796160

約数和(自身を除く): 517856220

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 166619, 333238, 499857, 666476, 833095, 999714, 1166333, 1499571, 1666190, 1999428, 2332666, 2499285, 2999142, 3332380, 3498999, 4665332, 4998570, 5831665, 5998284, 6997998, 7497855, 9997140, 10496997, 11663330, 13995996, 14995710, 17494995, 20993994, 23326660, 29991420, 34989990, 41987988, 52484985, 69979980, 104969970, 209939940]

約数ペア:

[(1, 209939940), (2, 104969970), (3, 69979980), (4, 52484985), (5, 41987988), (6, 34989990), (7, 29991420), (9, 23326660), (10, 20993994), (12, 17494995), (14, 14995710), (15, 13995996), (18, 11663330), (20, 10496997), (21, 9997140), (28, 7497855), (30, 6997998), (35, 5998284), (36, 5831665), (42, 4998570), (45, 4665332), (60, 3498999), (63, 3332380), (70, 2999142), (84, 2499285), (90, 2332666), (105, 1999428), (126, 1666190), (140, 1499571), (180, 1166333), (210, 999714), (252, 833095), (315, 666476), (420, 499857), (630, 333238), (1260, 166619)]