20315900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{73}}^1$

素因数の和:132

約数の個数: 108

約数和(自身を含む): 51257136

約数和(自身を除く): 30941236

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 25, 44, 46, 50, 55, 73, 92, 100, 110, 115, 121, 146, 220, 230, 242, 253, 275, 292, 365, 460, 484, 506, 550, 575, 605, 730, 803, 1012, 1100, 1150, 1210, 1265, 1460, 1606, 1679, 1825, 2300, 2420, 2530, 2783, 3025, 3212, 3358, 3650, 4015, 5060, 5566, 6050, 6325, 6716, 7300, 8030, 8395, 8833, 11132, 12100, 12650, 13915, 16060, 16790, 17666, 18469, 20075, 25300, 27830, 33580, 35332, 36938, 40150, 41975, 44165, 55660, 69575, 73876, 80300, 83950, 88330, 92345, 139150, 167900, 176660, 184690, 203159, 220825, 278300, 369380, 406318, 441650, 461725, 812636, 883300, 923450, 1015795, 1846900, 2031590, 4063180, 5078975, 10157950, 20315900]

約数ペア:

[(1, 20315900), (2, 10157950), (4, 5078975), (5, 4063180), (10, 2031590), (11, 1846900), (20, 1015795), (22, 923450), (23, 883300), (25, 812636), (44, 461725), (46, 441650), (50, 406318), (55, 369380), (73, 278300), (92, 220825), (100, 203159), (110, 184690), (115, 176660), (121, 167900), (146, 139150), (220, 92345), (230, 88330), (242, 83950), (253, 80300), (275, 73876), (292, 69575), (365, 55660), (460, 44165), (484, 41975), (506, 40150), (550, 36938), (575, 35332), (605, 33580), (730, 27830), (803, 25300), (1012, 20075), (1100, 18469), (1150, 17666), (1210, 16790), (1265, 16060), (1460, 13915), (1606, 12650), (1679, 12100), (1825, 11132), (2300, 8833), (2420, 8395), (2530, 8030), (2783, 7300), (3025, 6716), (3212, 6325), (3358, 6050), (3650, 5566), (4015, 5060)]