21000409020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{8719}}^1\times {\mathrm{13381}}^1$

素因数の和:22115

約数の個数: 72

約数和(自身を含む): 63713307840

約数和(自身を除く): 42712898820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 8719, 13381, 17438, 26157, 26762, 34876, 40143, 43595, 52314, 53524, 66905, 78471, 80286, 87190, 104628, 120429, 130785, 133810, 156942, 160572, 174380, 200715, 240858, 261570, 267620, 313884, 392355, 401430, 481716, 523140, 602145, 784710, 802860, 1204290, 1569420, 2408580, 116668939, 233337878, 350006817, 466675756, 583344695, 700013634, 1050020451, 1166689390, 1400027268, 1750034085, 2100040902, 2333378780, 3500068170, 4200081804, 5250102255, 7000136340, 10500204510, 21000409020]

約数ペア:

[(1, 21000409020), (2, 10500204510), (3, 7000136340), (4, 5250102255), (5, 4200081804), (6, 3500068170), (9, 2333378780), (10, 2100040902), (12, 1750034085), (15, 1400027268), (18, 1166689390), (20, 1050020451), (30, 700013634), (36, 583344695), (45, 466675756), (60, 350006817), (90, 233337878), (180, 116668939), (8719, 2408580), (13381, 1569420), (17438, 1204290), (26157, 802860), (26762, 784710), (34876, 602145), (40143, 523140), (43595, 481716), (52314, 401430), (53524, 392355), (66905, 313884), (78471, 267620), (80286, 261570), (87190, 240858), (104628, 200715), (120429, 174380), (130785, 160572), (133810, 156942)]