20459700

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{127}}^1\times {\mathrm{179}}^1$

素因数の和:326

約数の個数: 108

約数和(自身を含む): 64995840

約数和(自身を除く): 44536140

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 127, 150, 179, 180, 225, 254, 300, 358, 381, 450, 508, 537, 635, 716, 762, 895, 900, 1074, 1143, 1270, 1524, 1611, 1790, 1905, 2148, 2286, 2540, 2685, 3175, 3222, 3580, 3810, 4475, 4572, 5370, 5715, 6350, 6444, 7620, 8055, 8950, 9525, 10740, 11430, 12700, 13425, 16110, 17900, 19050, 22733, 22860, 26850, 28575, 32220, 38100, 40275, 45466, 53700, 57150, 68199, 80550, 90932, 113665, 114300, 136398, 161100, 204597, 227330, 272796, 340995, 409194, 454660, 568325, 681990, 818388, 1022985, 1136650, 1363980, 1704975, 2045970, 2273300, 3409950, 4091940, 5114925, 6819900, 10229850, 20459700]

約数ペア:

[(1, 20459700), (2, 10229850), (3, 6819900), (4, 5114925), (5, 4091940), (6, 3409950), (9, 2273300), (10, 2045970), (12, 1704975), (15, 1363980), (18, 1136650), (20, 1022985), (25, 818388), (30, 681990), (36, 568325), (45, 454660), (50, 409194), (60, 340995), (75, 272796), (90, 227330), (100, 204597), (127, 161100), (150, 136398), (179, 114300), (180, 113665), (225, 90932), (254, 80550), (300, 68199), (358, 57150), (381, 53700), (450, 45466), (508, 40275), (537, 38100), (635, 32220), (716, 28575), (762, 26850), (895, 22860), (900, 22733), (1074, 19050), (1143, 17900), (1270, 16110), (1524, 13425), (1611, 12700), (1790, 11430), (1905, 10740), (2148, 9525), (2286, 8950), (2540, 8055), (2685, 7620), (3175, 6444), (3222, 6350), (3580, 5715), (3810, 5370), (4475, 4572)]