21219770

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1$

素因数の和:132

約数の個数: 96

約数和(自身を含む): 48263040

約数和(自身を除く): 27043270

約数列:

[1, 2, 5, 10, 11, 13, 19, 22, 26, 38, 55, 65, 71, 95, 110, 121, 130, 142, 143, 190, 209, 242, 247, 286, 355, 418, 494, 605, 710, 715, 781, 923, 1045, 1210, 1235, 1349, 1430, 1562, 1573, 1846, 2090, 2299, 2470, 2698, 2717, 3146, 3905, 4598, 4615, 5434, 6745, 7810, 7865, 8591, 9230, 10153, 11495, 13490, 13585, 14839, 15730, 17182, 17537, 20306, 22990, 27170, 29678, 29887, 35074, 42955, 50765, 59774, 74195, 85910, 87685, 101530, 111683, 148390, 149435, 163229, 175370, 192907, 223366, 298870, 326458, 385814, 558415, 816145, 964535, 1116830, 1632290, 1929070, 2121977, 4243954, 10609885, 21219770]

約数ペア:

[(1, 21219770), (2, 10609885), (5, 4243954), (10, 2121977), (11, 1929070), (13, 1632290), (19, 1116830), (22, 964535), (26, 816145), (38, 558415), (55, 385814), (65, 326458), (71, 298870), (95, 223366), (110, 192907), (121, 175370), (130, 163229), (142, 149435), (143, 148390), (190, 111683), (209, 101530), (242, 87685), (247, 85910), (286, 74195), (355, 59774), (418, 50765), (494, 42955), (605, 35074), (710, 29887), (715, 29678), (781, 27170), (923, 22990), (1045, 20306), (1210, 17537), (1235, 17182), (1349, 15730), (1430, 14839), (1562, 13585), (1573, 13490), (1846, 11495), (2090, 10153), (2299, 9230), (2470, 8591), (2698, 7865), (2717, 7810), (3146, 6745), (3905, 5434), (4598, 4615)]