21088700

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{173}}^1$

素因数の和:263

約数の個数: 72

約数和(自身を含む): 48934368

約数和(自身を除く): 27845668

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 53, 92, 100, 106, 115, 173, 212, 230, 265, 346, 460, 530, 575, 692, 865, 1060, 1150, 1219, 1325, 1730, 2300, 2438, 2650, 3460, 3979, 4325, 4876, 5300, 6095, 7958, 8650, 9169, 12190, 15916, 17300, 18338, 19895, 24380, 30475, 36676, 39790, 45845, 60950, 79580, 91690, 99475, 121900, 183380, 198950, 210887, 229225, 397900, 421774, 458450, 843548, 916900, 1054435, 2108870, 4217740, 5272175, 10544350, 21088700]

約数ペア:

[(1, 21088700), (2, 10544350), (4, 5272175), (5, 4217740), (10, 2108870), (20, 1054435), (23, 916900), (25, 843548), (46, 458450), (50, 421774), (53, 397900), (92, 229225), (100, 210887), (106, 198950), (115, 183380), (173, 121900), (212, 99475), (230, 91690), (265, 79580), (346, 60950), (460, 45845), (530, 39790), (575, 36676), (692, 30475), (865, 24380), (1060, 19895), (1150, 18338), (1219, 17300), (1325, 15916), (1730, 12190), (2300, 9169), (2438, 8650), (2650, 7958), (3460, 6095), (3979, 5300), (4325, 4876)]