199917740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{14897}}^1$

素因数の和:14978

約数の個数: 48

約数和(自身を含む): 465532704

約数和(自身を除く): 265614964

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 61, 110, 122, 220, 244, 305, 610, 671, 1220, 1342, 2684, 3355, 6710, 13420, 14897, 29794, 59588, 74485, 148970, 163867, 297940, 327734, 655468, 819335, 908717, 1638670, 1817434, 3277340, 3634868, 4543585, 9087170, 9995887, 18174340, 19991774, 39983548, 49979435, 99958870, 199917740]

約数ペア:

[(1, 199917740), (2, 99958870), (4, 49979435), (5, 39983548), (10, 19991774), (11, 18174340), (20, 9995887), (22, 9087170), (44, 4543585), (55, 3634868), (61, 3277340), (110, 1817434), (122, 1638670), (220, 908717), (244, 819335), (305, 655468), (610, 327734), (671, 297940), (1220, 163867), (1342, 148970), (2684, 74485), (3355, 59588), (6710, 29794), (13420, 14897)]