20177870440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1091}}^1\times {\mathrm{5081}}^1$

素因数の和:6203

約数の個数: 128

約数和(自身を含む): 55939403520

約数和(自身を除く): 35761533080

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1091, 1820, 2182, 3640, 4364, 5081, 5455, 7637, 8728, 10162, 10910, 14183, 15274, 20324, 21820, 25405, 28366, 30548, 35567, 38185, 40648, 43640, 50810, 56732, 61096, 66053, 70915, 71134, 76370, 99281, 101620, 113464, 132106, 141830, 142268, 152740, 177835, 198562, 203240, 264212, 283660, 284536, 305480, 330265, 355670, 397124, 462371, 496405, 528424, 567320, 660530, 711340, 794248, 924742, 992810, 1321060, 1422680, 1849484, 1985620, 2311855, 2642120, 3698968, 3971240, 4623710, 5543371, 9247420, 11086742, 18494840, 22173484, 27716855, 38803597, 44346968, 55433710, 72063823, 77607194, 110867420, 144127646, 155214388, 194017985, 221734840, 288255292, 310428776, 360319115, 388035970, 504446761, 576510584, 720638230, 776071940, 1008893522, 1441276460, 1552143880, 2017787044, 2522233805, 2882552920, 4035574088, 5044467610, 10088935220, 20177870440]

約数ペア:

[(1, 20177870440), (2, 10088935220), (4, 5044467610), (5, 4035574088), (7, 2882552920), (8, 2522233805), (10, 2017787044), (13, 1552143880), (14, 1441276460), (20, 1008893522), (26, 776071940), (28, 720638230), (35, 576510584), (40, 504446761), (52, 388035970), (56, 360319115), (65, 310428776), (70, 288255292), (91, 221734840), (104, 194017985), (130, 155214388), (140, 144127646), (182, 110867420), (260, 77607194), (280, 72063823), (364, 55433710), (455, 44346968), (520, 38803597), (728, 27716855), (910, 22173484), (1091, 18494840), (1820, 11086742), (2182, 9247420), (3640, 5543371), (4364, 4623710), (5081, 3971240), (5455, 3698968), (7637, 2642120), (8728, 2311855), (10162, 1985620), (10910, 1849484), (14183, 1422680), (15274, 1321060), (20324, 992810), (21820, 924742), (25405, 794248), (28366, 711340), (30548, 660530), (35567, 567320), (38185, 528424), (40648, 496405), (43640, 462371), (50810, 397124), (56732, 355670), (61096, 330265), (66053, 305480), (70915, 284536), (71134, 283660), (76370, 264212), (99281, 203240), (101620, 198562), (113464, 177835), (132106, 152740), (141830, 142268)]