21312180

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{647}}^1$

素因数の和:726

約数の個数: 96

約数和(自身を含む): 67495680

約数和(自身を除く): 46183500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 61, 90, 108, 122, 135, 180, 183, 244, 270, 305, 366, 540, 549, 610, 647, 732, 915, 1098, 1220, 1294, 1647, 1830, 1941, 2196, 2588, 2745, 3235, 3294, 3660, 3882, 5490, 5823, 6470, 6588, 7764, 8235, 9705, 10980, 11646, 12940, 16470, 17469, 19410, 23292, 29115, 32940, 34938, 38820, 39467, 58230, 69876, 78934, 87345, 116460, 118401, 157868, 174690, 197335, 236802, 349380, 355203, 394670, 473604, 592005, 710406, 789340, 1065609, 1184010, 1420812, 1776015, 2131218, 2368020, 3552030, 4262436, 5328045, 7104060, 10656090, 21312180]

約数ペア:

[(1, 21312180), (2, 10656090), (3, 7104060), (4, 5328045), (5, 4262436), (6, 3552030), (9, 2368020), (10, 2131218), (12, 1776015), (15, 1420812), (18, 1184010), (20, 1065609), (27, 789340), (30, 710406), (36, 592005), (45, 473604), (54, 394670), (60, 355203), (61, 349380), (90, 236802), (108, 197335), (122, 174690), (135, 157868), (180, 118401), (183, 116460), (244, 87345), (270, 78934), (305, 69876), (366, 58230), (540, 39467), (549, 38820), (610, 34938), (647, 32940), (732, 29115), (915, 23292), (1098, 19410), (1220, 17469), (1294, 16470), (1647, 12940), (1830, 11646), (1941, 10980), (2196, 9705), (2588, 8235), (2745, 7764), (3235, 6588), (3294, 6470), (3660, 5823), (3882, 5490)]