1621156880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{18439}}^1$

素因数の和:18616

約数の個数: 80

約数和(自身を含む): 4335317760

約数和(自身を除く): 2714160880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 157, 280, 314, 560, 628, 785, 1099, 1256, 1570, 2198, 2512, 3140, 4396, 5495, 6280, 8792, 10990, 12560, 17584, 18439, 21980, 36878, 43960, 73756, 87920, 92195, 129073, 147512, 184390, 258146, 295024, 368780, 516292, 645365, 737560, 1032584, 1290730, 1475120, 2065168, 2581460, 2894923, 5162920, 5789846, 10325840, 11579692, 14474615, 20264461, 23159384, 28949230, 40528922, 46318768, 57898460, 81057844, 101322305, 115796920, 162115688, 202644610, 231593840, 324231376, 405289220, 810578440, 1621156880]

約数ペア:

[(1, 1621156880), (2, 810578440), (4, 405289220), (5, 324231376), (7, 231593840), (8, 202644610), (10, 162115688), (14, 115796920), (16, 101322305), (20, 81057844), (28, 57898460), (35, 46318768), (40, 40528922), (56, 28949230), (70, 23159384), (80, 20264461), (112, 14474615), (140, 11579692), (157, 10325840), (280, 5789846), (314, 5162920), (560, 2894923), (628, 2581460), (785, 2065168), (1099, 1475120), (1256, 1290730), (1570, 1032584), (2198, 737560), (2512, 645365), (3140, 516292), (4396, 368780), (5495, 295024), (6280, 258146), (8792, 184390), (10990, 147512), (12560, 129073), (17584, 92195), (18439, 87920), (21980, 73756), (36878, 43960)]