19698640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:117

約数の個数: 120

約数和(自身を含む): 52282368

約数和(自身を除く): 32583728

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 47, 52, 62, 65, 80, 94, 104, 124, 130, 155, 169, 188, 208, 235, 248, 260, 310, 338, 376, 403, 470, 496, 520, 611, 620, 676, 752, 806, 845, 940, 1040, 1222, 1240, 1352, 1457, 1612, 1690, 1880, 2015, 2444, 2480, 2704, 2914, 3055, 3224, 3380, 3760, 4030, 4888, 5239, 5828, 6110, 6448, 6760, 7285, 7943, 8060, 9776, 10478, 11656, 12220, 13520, 14570, 15886, 16120, 18941, 20956, 23312, 24440, 26195, 29140, 31772, 32240, 37882, 39715, 41912, 48880, 52390, 58280, 63544, 75764, 79430, 83824, 94705, 104780, 116560, 127088, 151528, 158860, 189410, 209560, 246233, 303056, 317720, 378820, 419120, 492466, 635440, 757640, 984932, 1231165, 1515280, 1969864, 2462330, 3939728, 4924660, 9849320, 19698640]

約数ペア:

[(1, 19698640), (2, 9849320), (4, 4924660), (5, 3939728), (8, 2462330), (10, 1969864), (13, 1515280), (16, 1231165), (20, 984932), (26, 757640), (31, 635440), (40, 492466), (47, 419120), (52, 378820), (62, 317720), (65, 303056), (80, 246233), (94, 209560), (104, 189410), (124, 158860), (130, 151528), (155, 127088), (169, 116560), (188, 104780), (208, 94705), (235, 83824), (248, 79430), (260, 75764), (310, 63544), (338, 58280), (376, 52390), (403, 48880), (470, 41912), (496, 39715), (520, 37882), (611, 32240), (620, 31772), (676, 29140), (752, 26195), (806, 24440), (845, 23312), (940, 20956), (1040, 18941), (1222, 16120), (1240, 15886), (1352, 14570), (1457, 13520), (1612, 12220), (1690, 11656), (1880, 10478), (2015, 9776), (2444, 8060), (2480, 7943), (2704, 7285), (2914, 6760), (3055, 6448), (3224, 6110), (3380, 5828), (3760, 5239), (4030, 4888)]