21000879822

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{55411}}^1$

素因数の和:55585

約数の個数: 64

約数和(自身を含む): 46695027456

約数和(自身を除く): 25694147634

約数列:

[1, 2, 3, 6, 13, 26, 39, 43, 78, 86, 113, 129, 226, 258, 339, 559, 678, 1118, 1469, 1677, 2938, 3354, 4407, 4859, 8814, 9718, 14577, 29154, 55411, 63167, 110822, 126334, 166233, 189501, 332466, 379002, 720343, 1440686, 2161029, 2382673, 4322058, 4765346, 6261443, 7148019, 12522886, 14296038, 18784329, 30974749, 37568658, 61949498, 81398759, 92924247, 162797518, 185848494, 244196277, 269242049, 488392554, 538484098, 807726147, 1615452294, 3500146637, 7000293274, 10500439911, 21000879822]

約数ペア:

[(1, 21000879822), (2, 10500439911), (3, 7000293274), (6, 3500146637), (13, 1615452294), (26, 807726147), (39, 538484098), (43, 488392554), (78, 269242049), (86, 244196277), (113, 185848494), (129, 162797518), (226, 92924247), (258, 81398759), (339, 61949498), (559, 37568658), (678, 30974749), (1118, 18784329), (1469, 14296038), (1677, 12522886), (2938, 7148019), (3354, 6261443), (4407, 4765346), (4859, 4322058), (8814, 2382673), (9718, 2161029), (14577, 1440686), (29154, 720343), (55411, 379002), (63167, 332466), (110822, 189501), (126334, 166233)]