21306930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{199}}^1$

素因数の和:335

約数の個数: 64

約数和(自身を含む): 53222400

約数和(自身を除く): 31915470

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 83, 86, 129, 166, 199, 215, 249, 258, 398, 415, 430, 498, 597, 645, 830, 995, 1194, 1245, 1290, 1990, 2490, 2985, 3569, 5970, 7138, 8557, 10707, 16517, 17114, 17845, 21414, 25671, 33034, 35690, 42785, 49551, 51342, 53535, 82585, 85570, 99102, 107070, 128355, 165170, 247755, 256710, 495510, 710231, 1420462, 2130693, 3551155, 4261386, 7102310, 10653465, 21306930]

約数ペア:

[(1, 21306930), (2, 10653465), (3, 7102310), (5, 4261386), (6, 3551155), (10, 2130693), (15, 1420462), (30, 710231), (43, 495510), (83, 256710), (86, 247755), (129, 165170), (166, 128355), (199, 107070), (215, 99102), (249, 85570), (258, 82585), (398, 53535), (415, 51342), (430, 49551), (498, 42785), (597, 35690), (645, 33034), (830, 25671), (995, 21414), (1194, 17845), (1245, 17114), (1290, 16517), (1990, 10707), (2490, 8557), (2985, 7138), (3569, 5970)]