20867820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{179}}^1$

素因数の和:287

約数の個数: 96

約数和(自身を含む): 61689600

約数和(自身を除く): 40821780

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 29, 30, 58, 60, 67, 87, 116, 134, 145, 174, 179, 201, 268, 290, 335, 348, 358, 402, 435, 537, 580, 670, 716, 804, 870, 895, 1005, 1074, 1340, 1740, 1790, 1943, 2010, 2148, 2685, 3580, 3886, 4020, 5191, 5370, 5829, 7772, 9715, 10382, 10740, 11658, 11993, 15573, 19430, 20764, 23316, 23986, 25955, 29145, 31146, 35979, 38860, 47972, 51910, 58290, 59965, 62292, 71958, 77865, 103820, 116580, 119930, 143916, 155730, 179895, 239860, 311460, 347797, 359790, 695594, 719580, 1043391, 1391188, 1738985, 2086782, 3477970, 4173564, 5216955, 6955940, 10433910, 20867820]

約数ペア:

[(1, 20867820), (2, 10433910), (3, 6955940), (4, 5216955), (5, 4173564), (6, 3477970), (10, 2086782), (12, 1738985), (15, 1391188), (20, 1043391), (29, 719580), (30, 695594), (58, 359790), (60, 347797), (67, 311460), (87, 239860), (116, 179895), (134, 155730), (145, 143916), (174, 119930), (179, 116580), (201, 103820), (268, 77865), (290, 71958), (335, 62292), (348, 59965), (358, 58290), (402, 51910), (435, 47972), (537, 38860), (580, 35979), (670, 31146), (716, 29145), (804, 25955), (870, 23986), (895, 23316), (1005, 20764), (1074, 19430), (1340, 15573), (1740, 11993), (1790, 11658), (1943, 10740), (2010, 10382), (2148, 9715), (2685, 7772), (3580, 5829), (3886, 5370), (4020, 5191)]