19861270

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1$

素因数の和:110

約数の個数: 128

約数和(自身を含む): 47900160

約数和(自身を除く): 28038890

約数列:

[1, 2, 5, 10, 11, 13, 17, 19, 22, 26, 34, 38, 43, 55, 65, 85, 86, 95, 110, 130, 143, 170, 187, 190, 209, 215, 221, 247, 286, 323, 374, 418, 430, 442, 473, 494, 559, 646, 715, 731, 817, 935, 946, 1045, 1105, 1118, 1235, 1430, 1462, 1615, 1634, 1870, 2090, 2210, 2365, 2431, 2470, 2717, 2795, 3230, 3553, 3655, 4085, 4199, 4730, 4862, 5434, 5590, 6149, 7106, 7310, 8041, 8170, 8398, 8987, 9503, 10621, 12155, 12298, 13585, 13889, 16082, 17765, 17974, 19006, 20995, 21242, 24310, 27170, 27778, 30745, 35530, 40205, 41990, 44935, 46189, 47515, 53105, 61490, 69445, 80410, 89870, 92378, 95030, 104533, 106210, 116831, 138890, 152779, 180557, 209066, 230945, 233662, 305558, 361114, 461890, 522665, 584155, 763895, 902785, 1045330, 1168310, 1527790, 1805570, 1986127, 3972254, 9930635, 19861270]

約数ペア:

[(1, 19861270), (2, 9930635), (5, 3972254), (10, 1986127), (11, 1805570), (13, 1527790), (17, 1168310), (19, 1045330), (22, 902785), (26, 763895), (34, 584155), (38, 522665), (43, 461890), (55, 361114), (65, 305558), (85, 233662), (86, 230945), (95, 209066), (110, 180557), (130, 152779), (143, 138890), (170, 116831), (187, 106210), (190, 104533), (209, 95030), (215, 92378), (221, 89870), (247, 80410), (286, 69445), (323, 61490), (374, 53105), (418, 47515), (430, 46189), (442, 44935), (473, 41990), (494, 40205), (559, 35530), (646, 30745), (715, 27778), (731, 27170), (817, 24310), (935, 21242), (946, 20995), (1045, 19006), (1105, 17974), (1118, 17765), (1235, 16082), (1430, 13889), (1462, 13585), (1615, 12298), (1634, 12155), (1870, 10621), (2090, 9503), (2210, 8987), (2365, 8398), (2431, 8170), (2470, 8041), (2717, 7310), (2795, 7106), (3230, 6149), (3553, 5590), (3655, 5434), (4085, 4862), (4199, 4730)]