20209020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1993}}^1$

素因数の和:2031

約数の個数: 72

約数和(自身を含む): 61303536

約数和(自身を除く): 41094516

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 169, 195, 260, 338, 390, 507, 676, 780, 845, 1014, 1690, 1993, 2028, 2535, 3380, 3986, 5070, 5979, 7972, 9965, 10140, 11958, 19930, 23916, 25909, 29895, 39860, 51818, 59790, 77727, 103636, 119580, 129545, 155454, 259090, 310908, 336817, 388635, 518180, 673634, 777270, 1010451, 1347268, 1554540, 1684085, 2020902, 3368170, 4041804, 5052255, 6736340, 10104510, 20209020]

約数ペア:

[(1, 20209020), (2, 10104510), (3, 6736340), (4, 5052255), (5, 4041804), (6, 3368170), (10, 2020902), (12, 1684085), (13, 1554540), (15, 1347268), (20, 1010451), (26, 777270), (30, 673634), (39, 518180), (52, 388635), (60, 336817), (65, 310908), (78, 259090), (130, 155454), (156, 129545), (169, 119580), (195, 103636), (260, 77727), (338, 59790), (390, 51818), (507, 39860), (676, 29895), (780, 25909), (845, 23916), (1014, 19930), (1690, 11958), (1993, 10140), (2028, 9965), (2535, 7972), (3380, 5979), (3986, 5070)]