21103908

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1889}}^1$

素因数の和:1929

約数の個数: 72

約数和(自身を含む): 60328800

約数和(自身を除く): 39224892

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 19, 21, 28, 38, 42, 49, 57, 76, 84, 98, 114, 133, 147, 196, 228, 266, 294, 399, 532, 588, 798, 931, 1596, 1862, 1889, 2793, 3724, 3778, 5586, 5667, 7556, 11172, 11334, 13223, 22668, 26446, 35891, 39669, 52892, 71782, 79338, 92561, 107673, 143564, 158676, 185122, 215346, 251237, 277683, 370244, 430692, 502474, 555366, 753711, 1004948, 1110732, 1507422, 1758659, 3014844, 3517318, 5275977, 7034636, 10551954, 21103908]

約数ペア:

[(1, 21103908), (2, 10551954), (3, 7034636), (4, 5275977), (6, 3517318), (7, 3014844), (12, 1758659), (14, 1507422), (19, 1110732), (21, 1004948), (28, 753711), (38, 555366), (42, 502474), (49, 430692), (57, 370244), (76, 277683), (84, 251237), (98, 215346), (114, 185122), (133, 158676), (147, 143564), (196, 107673), (228, 92561), (266, 79338), (294, 71782), (399, 52892), (532, 39669), (588, 35891), (798, 26446), (931, 22668), (1596, 13223), (1862, 11334), (1889, 11172), (2793, 7556), (3724, 5667), (3778, 5586)]