21128623020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{2971}}^1\times {\mathrm{39509}}^1$

素因数の和:42495

約数の個数: 72

約数和(自身を含む): 64113351120

約数和(自身を除く): 42984728100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 2971, 5942, 8913, 11884, 14855, 17826, 26739, 29710, 35652, 39509, 44565, 53478, 59420, 79018, 89130, 106956, 118527, 133695, 158036, 178260, 197545, 237054, 267390, 355581, 395090, 474108, 534780, 592635, 711162, 790180, 1185270, 1422324, 1777905, 2370540, 3555810, 7111620, 117381239, 234762478, 352143717, 469524956, 586906195, 704287434, 1056431151, 1173812390, 1408574868, 1760718585, 2112862302, 2347624780, 3521437170, 4225724604, 5282155755, 7042874340, 10564311510, 21128623020]

約数ペア:

[(1, 21128623020), (2, 10564311510), (3, 7042874340), (4, 5282155755), (5, 4225724604), (6, 3521437170), (9, 2347624780), (10, 2112862302), (12, 1760718585), (15, 1408574868), (18, 1173812390), (20, 1056431151), (30, 704287434), (36, 586906195), (45, 469524956), (60, 352143717), (90, 234762478), (180, 117381239), (2971, 7111620), (5942, 3555810), (8913, 2370540), (11884, 1777905), (14855, 1422324), (17826, 1185270), (26739, 790180), (29710, 711162), (35652, 592635), (39509, 534780), (44565, 474108), (53478, 395090), (59420, 355581), (79018, 267390), (89130, 237054), (106956, 197545), (118527, 178260), (133695, 158036)]