21151356

素因数分解:

$2^2\times 3^1\times {\mathrm{43}}^1\times {\mathrm{179}}^1\times {\mathrm{229}}^1$

素因数の和:458

約数の個数: 48

約数和(自身を含む): 51004800

約数和(自身を除く): 29853444

約数列:

[1, 2, 3, 4, 6, 12, 43, 86, 129, 172, 179, 229, 258, 358, 458, 516, 537, 687, 716, 916, 1074, 1374, 2148, 2748, 7697, 9847, 15394, 19694, 23091, 29541, 30788, 39388, 40991, 46182, 59082, 81982, 92364, 118164, 122973, 163964, 245946, 491892, 1762613, 3525226, 5287839, 7050452, 10575678, 21151356]

約数ペア:

[(1, 21151356), (2, 10575678), (3, 7050452), (4, 5287839), (6, 3525226), (12, 1762613), (43, 491892), (86, 245946), (129, 163964), (172, 122973), (179, 118164), (229, 92364), (258, 81982), (358, 59082), (458, 46182), (516, 40991), (537, 39388), (687, 30788), (716, 29541), (916, 23091), (1074, 19694), (1374, 15394), (2148, 9847), (2748, 7697)]