20899080

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{523}}^1$

素因数の和:580

約数の個数: 128

約数和(自身を含む): 71683200

約数和(自身を除く): 50784120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 37, 40, 45, 54, 60, 72, 74, 90, 108, 111, 120, 135, 148, 180, 185, 216, 222, 270, 296, 333, 360, 370, 444, 523, 540, 555, 666, 740, 888, 999, 1046, 1080, 1110, 1332, 1480, 1569, 1665, 1998, 2092, 2220, 2615, 2664, 3138, 3330, 3996, 4184, 4440, 4707, 4995, 5230, 6276, 6660, 7845, 7992, 9414, 9990, 10460, 12552, 13320, 14121, 15690, 18828, 19351, 19980, 20920, 23535, 28242, 31380, 37656, 38702, 39960, 47070, 56484, 58053, 62760, 70605, 77404, 94140, 96755, 112968, 116106, 141210, 154808, 174159, 188280, 193510, 232212, 282420, 290265, 348318, 387020, 464424, 522477, 564840, 580530, 696636, 774040, 870795, 1044954, 1161060, 1393272, 1741590, 2089908, 2322120, 2612385, 3483180, 4179816, 5224770, 6966360, 10449540, 20899080]

約数ペア:

[(1, 20899080), (2, 10449540), (3, 6966360), (4, 5224770), (5, 4179816), (6, 3483180), (8, 2612385), (9, 2322120), (10, 2089908), (12, 1741590), (15, 1393272), (18, 1161060), (20, 1044954), (24, 870795), (27, 774040), (30, 696636), (36, 580530), (37, 564840), (40, 522477), (45, 464424), (54, 387020), (60, 348318), (72, 290265), (74, 282420), (90, 232212), (108, 193510), (111, 188280), (120, 174159), (135, 154808), (148, 141210), (180, 116106), (185, 112968), (216, 96755), (222, 94140), (270, 77404), (296, 70605), (333, 62760), (360, 58053), (370, 56484), (444, 47070), (523, 39960), (540, 38702), (555, 37656), (666, 31380), (740, 28242), (888, 23535), (999, 20920), (1046, 19980), (1080, 19351), (1110, 18828), (1332, 15690), (1480, 14121), (1569, 13320), (1665, 12552), (1998, 10460), (2092, 9990), (2220, 9414), (2615, 7992), (2664, 7845), (3138, 6660), (3330, 6276), (3996, 5230), (4184, 4995), (4440, 4707)]