21708830

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1$

素因数の和:114

約数の個数: 128

約数和(自身を含む): 52254720

約数和(自身を除く): 30545890

約数列:

[1, 2, 5, 10, 11, 13, 17, 19, 22, 26, 34, 38, 47, 55, 65, 85, 94, 95, 110, 130, 143, 170, 187, 190, 209, 221, 235, 247, 286, 323, 374, 418, 442, 470, 494, 517, 611, 646, 715, 799, 893, 935, 1034, 1045, 1105, 1222, 1235, 1430, 1598, 1615, 1786, 1870, 2090, 2210, 2431, 2470, 2585, 2717, 3055, 3230, 3553, 3995, 4199, 4465, 4862, 5170, 5434, 6110, 6721, 7106, 7990, 8398, 8789, 8930, 9823, 10387, 11609, 12155, 13442, 13585, 15181, 17578, 17765, 19646, 20774, 20995, 23218, 24310, 27170, 30362, 33605, 35530, 41990, 43945, 46189, 49115, 51935, 58045, 67210, 75905, 87890, 92378, 98230, 103870, 114257, 116090, 127699, 151810, 166991, 197353, 228514, 230945, 255398, 333982, 394706, 461890, 571285, 638495, 834955, 986765, 1142570, 1276990, 1669910, 1973530, 2170883, 4341766, 10854415, 21708830]

約数ペア:

[(1, 21708830), (2, 10854415), (5, 4341766), (10, 2170883), (11, 1973530), (13, 1669910), (17, 1276990), (19, 1142570), (22, 986765), (26, 834955), (34, 638495), (38, 571285), (47, 461890), (55, 394706), (65, 333982), (85, 255398), (94, 230945), (95, 228514), (110, 197353), (130, 166991), (143, 151810), (170, 127699), (187, 116090), (190, 114257), (209, 103870), (221, 98230), (235, 92378), (247, 87890), (286, 75905), (323, 67210), (374, 58045), (418, 51935), (442, 49115), (470, 46189), (494, 43945), (517, 41990), (611, 35530), (646, 33605), (715, 30362), (799, 27170), (893, 24310), (935, 23218), (1034, 20995), (1045, 20774), (1105, 19646), (1222, 17765), (1235, 17578), (1430, 15181), (1598, 13585), (1615, 13442), (1786, 12155), (1870, 11609), (2090, 10387), (2210, 9823), (2431, 8930), (2470, 8789), (2585, 8398), (2717, 7990), (3055, 7106), (3230, 6721), (3553, 6110), (3995, 5434), (4199, 5170), (4465, 4862)]