20342280

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{397}}^1$

素因数の和:479

約数の個数: 128

約数和(自身を含む): 71066880

約数和(自身を除く): 50724600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 61, 70, 84, 105, 120, 122, 140, 168, 183, 210, 244, 280, 305, 366, 397, 420, 427, 488, 610, 732, 794, 840, 854, 915, 1191, 1220, 1281, 1464, 1588, 1708, 1830, 1985, 2135, 2382, 2440, 2562, 2779, 3176, 3416, 3660, 3970, 4270, 4764, 5124, 5558, 5955, 6405, 7320, 7940, 8337, 8540, 9528, 10248, 11116, 11910, 12810, 13895, 15880, 16674, 17080, 22232, 23820, 24217, 25620, 27790, 33348, 41685, 47640, 48434, 51240, 55580, 66696, 72651, 83370, 96868, 111160, 121085, 145302, 166740, 169519, 193736, 242170, 290604, 333480, 339038, 363255, 484340, 508557, 581208, 678076, 726510, 847595, 968680, 1017114, 1356152, 1453020, 1695190, 2034228, 2542785, 2906040, 3390380, 4068456, 5085570, 6780760, 10171140, 20342280]

約数ペア:

[(1, 20342280), (2, 10171140), (3, 6780760), (4, 5085570), (5, 4068456), (6, 3390380), (7, 2906040), (8, 2542785), (10, 2034228), (12, 1695190), (14, 1453020), (15, 1356152), (20, 1017114), (21, 968680), (24, 847595), (28, 726510), (30, 678076), (35, 581208), (40, 508557), (42, 484340), (56, 363255), (60, 339038), (61, 333480), (70, 290604), (84, 242170), (105, 193736), (120, 169519), (122, 166740), (140, 145302), (168, 121085), (183, 111160), (210, 96868), (244, 83370), (280, 72651), (305, 66696), (366, 55580), (397, 51240), (420, 48434), (427, 47640), (488, 41685), (610, 33348), (732, 27790), (794, 25620), (840, 24217), (854, 23820), (915, 22232), (1191, 17080), (1220, 16674), (1281, 15880), (1464, 13895), (1588, 12810), (1708, 11910), (1830, 11116), (1985, 10248), (2135, 9528), (2382, 8540), (2440, 8337), (2562, 7940), (2779, 7320), (3176, 6405), (3416, 5955), (3660, 5558), (3970, 5124), (4270, 4764)]