21247668

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{547}}^1$

素因数の和:653

約数の個数: 72

約数和(自身を含む): 58644768

約数和(自身を除く): 37397100

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 83, 117, 156, 166, 234, 249, 332, 468, 498, 547, 747, 996, 1079, 1094, 1494, 1641, 2158, 2188, 2988, 3237, 3282, 4316, 4923, 6474, 6564, 7111, 9711, 9846, 12948, 14222, 19422, 19692, 21333, 28444, 38844, 42666, 45401, 63999, 85332, 90802, 127998, 136203, 181604, 255996, 272406, 408609, 544812, 590213, 817218, 1180426, 1634436, 1770639, 2360852, 3541278, 5311917, 7082556, 10623834, 21247668]

約数ペア:

[(1, 21247668), (2, 10623834), (3, 7082556), (4, 5311917), (6, 3541278), (9, 2360852), (12, 1770639), (13, 1634436), (18, 1180426), (26, 817218), (36, 590213), (39, 544812), (52, 408609), (78, 272406), (83, 255996), (117, 181604), (156, 136203), (166, 127998), (234, 90802), (249, 85332), (332, 63999), (468, 45401), (498, 42666), (547, 38844), (747, 28444), (996, 21333), (1079, 19692), (1094, 19422), (1494, 14222), (1641, 12948), (2158, 9846), (2188, 9711), (2988, 7111), (3237, 6564), (3282, 6474), (4316, 4923)]