20713990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1$

素因数の和:118

約数の個数: 96

約数和(自身を含む): 46539360

約数和(自身を除く): 25825370

約数列:

[1, 2, 5, 10, 11, 17, 19, 22, 34, 38, 53, 55, 85, 95, 106, 110, 121, 170, 187, 190, 209, 242, 265, 323, 374, 418, 530, 583, 605, 646, 901, 935, 1007, 1045, 1166, 1210, 1615, 1802, 1870, 2014, 2057, 2090, 2299, 2915, 3230, 3553, 4114, 4505, 4598, 5035, 5830, 6413, 7106, 9010, 9911, 10070, 10285, 11077, 11495, 12826, 17119, 17765, 19822, 20570, 22154, 22990, 32065, 34238, 35530, 39083, 49555, 55385, 64130, 78166, 85595, 99110, 109021, 110770, 121847, 171190, 188309, 195415, 218042, 243694, 376618, 390830, 545105, 609235, 941545, 1090210, 1218470, 1883090, 2071399, 4142798, 10356995, 20713990]

約数ペア:

[(1, 20713990), (2, 10356995), (5, 4142798), (10, 2071399), (11, 1883090), (17, 1218470), (19, 1090210), (22, 941545), (34, 609235), (38, 545105), (53, 390830), (55, 376618), (85, 243694), (95, 218042), (106, 195415), (110, 188309), (121, 171190), (170, 121847), (187, 110770), (190, 109021), (209, 99110), (242, 85595), (265, 78166), (323, 64130), (374, 55385), (418, 49555), (530, 39083), (583, 35530), (605, 34238), (646, 32065), (901, 22990), (935, 22154), (1007, 20570), (1045, 19822), (1166, 17765), (1210, 17119), (1615, 12826), (1802, 11495), (1870, 11077), (2014, 10285), (2057, 10070), (2090, 9911), (2299, 9010), (2915, 7106), (3230, 6413), (3553, 5830), (4114, 5035), (4505, 4598)]