21327228

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{229}}^1$

素因数の和:451

約数の個数: 72

約数和(自身を含む): 58604000

約数和(自身を除く): 37276772

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 199, 229, 234, 398, 458, 468, 597, 687, 796, 916, 1194, 1374, 1791, 2061, 2388, 2587, 2748, 2977, 3582, 4122, 5174, 5954, 7164, 7761, 8244, 8931, 10348, 11908, 15522, 17862, 23283, 26793, 31044, 35724, 45571, 46566, 53586, 91142, 93132, 107172, 136713, 182284, 273426, 410139, 546852, 592423, 820278, 1184846, 1640556, 1777269, 2369692, 3554538, 5331807, 7109076, 10663614, 21327228]

約数ペア:

[(1, 21327228), (2, 10663614), (3, 7109076), (4, 5331807), (6, 3554538), (9, 2369692), (12, 1777269), (13, 1640556), (18, 1184846), (26, 820278), (36, 592423), (39, 546852), (52, 410139), (78, 273426), (117, 182284), (156, 136713), (199, 107172), (229, 93132), (234, 91142), (398, 53586), (458, 46566), (468, 45571), (597, 35724), (687, 31044), (796, 26793), (916, 23283), (1194, 17862), (1374, 15522), (1791, 11908), (2061, 10348), (2388, 8931), (2587, 8244), (2748, 7761), (2977, 7164), (3582, 5954), (4122, 5174)]