20894790

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:166

約数の個数: 128

約数和(自身を含む): 61378560

約数和(自身を除く): 40483770

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 29, 30, 35, 42, 47, 58, 70, 73, 87, 94, 105, 141, 145, 146, 174, 203, 210, 219, 235, 282, 290, 329, 365, 406, 435, 438, 470, 511, 609, 658, 705, 730, 870, 987, 1015, 1022, 1095, 1218, 1363, 1410, 1533, 1645, 1974, 2030, 2117, 2190, 2555, 2726, 3045, 3066, 3290, 3431, 4089, 4234, 4935, 5110, 6090, 6351, 6815, 6862, 7665, 8178, 9541, 9870, 10293, 10585, 12702, 13630, 14819, 15330, 17155, 19082, 20445, 20586, 21170, 24017, 28623, 29638, 31755, 34310, 40890, 44457, 47705, 48034, 51465, 57246, 63510, 72051, 74095, 88914, 95410, 99499, 102930, 120085, 143115, 144102, 148190, 198998, 222285, 240170, 286230, 298497, 360255, 444570, 497495, 596994, 696493, 720510, 994990, 1392986, 1492485, 2089479, 2984970, 3482465, 4178958, 6964930, 10447395, 20894790]

約数ペア:

[(1, 20894790), (2, 10447395), (3, 6964930), (5, 4178958), (6, 3482465), (7, 2984970), (10, 2089479), (14, 1492485), (15, 1392986), (21, 994990), (29, 720510), (30, 696493), (35, 596994), (42, 497495), (47, 444570), (58, 360255), (70, 298497), (73, 286230), (87, 240170), (94, 222285), (105, 198998), (141, 148190), (145, 144102), (146, 143115), (174, 120085), (203, 102930), (210, 99499), (219, 95410), (235, 88914), (282, 74095), (290, 72051), (329, 63510), (365, 57246), (406, 51465), (435, 48034), (438, 47705), (470, 44457), (511, 40890), (609, 34310), (658, 31755), (705, 29638), (730, 28623), (870, 24017), (987, 21170), (1015, 20586), (1022, 20445), (1095, 19082), (1218, 17155), (1363, 15330), (1410, 14819), (1533, 13630), (1645, 12702), (1974, 10585), (2030, 10293), (2117, 9870), (2190, 9541), (2555, 8178), (2726, 7665), (3045, 6862), (3066, 6815), (3290, 6351), (3431, 6090), (4089, 5110), (4234, 4935)]