21206722100

素因数分解:

$2^2\times 5^2\times {\mathrm{353}}^1\times {\mathrm{701}}^1\times {\mathrm{857}}^1$

素因数の和:1925

約数の個数: 72

約数和(自身を含む): 46268710488

約数和(自身を除く): 25061988388

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 353, 701, 706, 857, 1402, 1412, 1714, 1765, 2804, 3428, 3505, 3530, 4285, 7010, 7060, 8570, 8825, 14020, 17140, 17525, 17650, 21425, 35050, 35300, 42850, 70100, 85700, 247453, 302521, 494906, 600757, 605042, 989812, 1201514, 1210084, 1237265, 1512605, 2403028, 2474530, 3003785, 3025210, 4949060, 6007570, 6050420, 6186325, 7563025, 12015140, 12372650, 15018925, 15126050, 24745300, 30037850, 30252100, 60075700, 212067221, 424134442, 848268884, 1060336105, 2120672210, 4241344420, 5301680525, 10603361050, 21206722100]

約数ペア:

[(1, 21206722100), (2, 10603361050), (4, 5301680525), (5, 4241344420), (10, 2120672210), (20, 1060336105), (25, 848268884), (50, 424134442), (100, 212067221), (353, 60075700), (701, 30252100), (706, 30037850), (857, 24745300), (1402, 15126050), (1412, 15018925), (1714, 12372650), (1765, 12015140), (2804, 7563025), (3428, 6186325), (3505, 6050420), (3530, 6007570), (4285, 4949060), (7010, 3025210), (7060, 3003785), (8570, 2474530), (8825, 2403028), (14020, 1512605), (17140, 1237265), (17525, 1210084), (17650, 1201514), (21425, 989812), (35050, 605042), (35300, 600757), (42850, 494906), (70100, 302521), (85700, 247453)]