20211516

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2273}}^1$

素因数の和:2315

約数の個数: 72

約数和(自身を含む): 57941520

約数和(自身を除く): 37730004

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 19, 26, 36, 38, 39, 52, 57, 76, 78, 114, 117, 156, 171, 228, 234, 247, 342, 468, 494, 684, 741, 988, 1482, 2223, 2273, 2964, 4446, 4546, 6819, 8892, 9092, 13638, 20457, 27276, 29549, 40914, 43187, 59098, 81828, 86374, 88647, 118196, 129561, 172748, 177294, 259122, 265941, 354588, 388683, 518244, 531882, 561431, 777366, 1063764, 1122862, 1554732, 1684293, 2245724, 3368586, 5052879, 6737172, 10105758, 20211516]

約数ペア:

[(1, 20211516), (2, 10105758), (3, 6737172), (4, 5052879), (6, 3368586), (9, 2245724), (12, 1684293), (13, 1554732), (18, 1122862), (19, 1063764), (26, 777366), (36, 561431), (38, 531882), (39, 518244), (52, 388683), (57, 354588), (76, 265941), (78, 259122), (114, 177294), (117, 172748), (156, 129561), (171, 118196), (228, 88647), (234, 86374), (247, 81828), (342, 59098), (468, 43187), (494, 40914), (684, 29549), (741, 27276), (988, 20457), (1482, 13638), (2223, 9092), (2273, 8892), (2964, 6819), (4446, 4546)]