21000887986

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{317}}^1\times {\mathrm{2273}}^1$

素因数の和:2683

約数の個数: 64

約数和(自身を含む): 36445852800

約数和(自身を除く): 15444964814

約数列:

[1, 2, 13, 19, 26, 38, 59, 118, 247, 317, 494, 634, 767, 1121, 1534, 2242, 2273, 4121, 4546, 6023, 8242, 12046, 14573, 18703, 29146, 29549, 37406, 43187, 59098, 78299, 86374, 134107, 156598, 243139, 268214, 355357, 486278, 561431, 710714, 720541, 1122862, 1441082, 1743391, 2548033, 3486782, 4619641, 5096066, 9239282, 9367033, 13690279, 18734066, 27380558, 33124429, 42511919, 66248858, 85023838, 177973627, 355947254, 552654947, 807726461, 1105309894, 1615452922, 10500443993, 21000887986]

約数ペア:

[(1, 21000887986), (2, 10500443993), (13, 1615452922), (19, 1105309894), (26, 807726461), (38, 552654947), (59, 355947254), (118, 177973627), (247, 85023838), (317, 66248858), (494, 42511919), (634, 33124429), (767, 27380558), (1121, 18734066), (1534, 13690279), (2242, 9367033), (2273, 9239282), (4121, 5096066), (4546, 4619641), (6023, 3486782), (8242, 2548033), (12046, 1743391), (14573, 1441082), (18703, 1122862), (29146, 720541), (29549, 710714), (37406, 561431), (43187, 486278), (59098, 355357), (78299, 268214), (86374, 243139), (134107, 156598)]