21319020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{6967}}^1$

素因数の和:6999

約数の個数: 72

約数和(自身を含む): 68481504

約数和(自身を除く): 47162484

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 306, 340, 510, 612, 765, 1020, 1530, 3060, 6967, 13934, 20901, 27868, 34835, 41802, 62703, 69670, 83604, 104505, 118439, 125406, 139340, 209010, 236878, 250812, 313515, 355317, 418020, 473756, 592195, 627030, 710634, 1065951, 1184390, 1254060, 1421268, 1776585, 2131902, 2368780, 3553170, 4263804, 5329755, 7106340, 10659510, 21319020]

約数ペア:

[(1, 21319020), (2, 10659510), (3, 7106340), (4, 5329755), (5, 4263804), (6, 3553170), (9, 2368780), (10, 2131902), (12, 1776585), (15, 1421268), (17, 1254060), (18, 1184390), (20, 1065951), (30, 710634), (34, 627030), (36, 592195), (45, 473756), (51, 418020), (60, 355317), (68, 313515), (85, 250812), (90, 236878), (102, 209010), (153, 139340), (170, 125406), (180, 118439), (204, 104505), (255, 83604), (306, 69670), (340, 62703), (510, 41802), (612, 34835), (765, 27868), (1020, 20901), (1530, 13934), (3060, 6967)]