1298820640

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{20143}}^1$

素因数の和:20202

約数の個数: 96

約数和(自身を含む): 3411265536

約数和(自身を除く): 2112444896

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 65, 80, 104, 124, 130, 155, 160, 208, 248, 260, 310, 403, 416, 496, 520, 620, 806, 992, 1040, 1240, 1612, 2015, 2080, 2480, 3224, 4030, 4960, 6448, 8060, 12896, 16120, 20143, 32240, 40286, 64480, 80572, 100715, 161144, 201430, 261859, 322288, 402860, 523718, 624433, 644576, 805720, 1047436, 1248866, 1309295, 1611440, 2094872, 2497732, 2618590, 3122165, 3222880, 4189744, 4995464, 5237180, 6244330, 8117629, 8379488, 9990928, 10474360, 12488660, 16235258, 19981856, 20948720, 24977320, 32470516, 40588145, 41897440, 49954640, 64941032, 81176290, 99909280, 129882064, 162352580, 259764128, 324705160, 649410320, 1298820640]

約数ペア:

[(1, 1298820640), (2, 649410320), (4, 324705160), (5, 259764128), (8, 162352580), (10, 129882064), (13, 99909280), (16, 81176290), (20, 64941032), (26, 49954640), (31, 41897440), (32, 40588145), (40, 32470516), (52, 24977320), (62, 20948720), (65, 19981856), (80, 16235258), (104, 12488660), (124, 10474360), (130, 9990928), (155, 8379488), (160, 8117629), (208, 6244330), (248, 5237180), (260, 4995464), (310, 4189744), (403, 3222880), (416, 3122165), (496, 2618590), (520, 2497732), (620, 2094872), (806, 1611440), (992, 1309295), (1040, 1248866), (1240, 1047436), (1612, 805720), (2015, 644576), (2080, 624433), (2480, 523718), (3224, 402860), (4030, 322288), (4960, 261859), (6448, 201430), (8060, 161144), (12896, 100715), (16120, 80572), (20143, 64480), (32240, 40286)]