20148920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{181}}^1$

素因数の和:237

約数の個数: 96

約数和(自身を含む): 52284960

約数和(自身を除く): 32136040

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 40, 44, 46, 55, 88, 92, 110, 115, 121, 181, 184, 220, 230, 242, 253, 362, 440, 460, 484, 506, 605, 724, 905, 920, 968, 1012, 1210, 1265, 1448, 1810, 1991, 2024, 2420, 2530, 2783, 3620, 3982, 4163, 4840, 5060, 5566, 7240, 7964, 8326, 9955, 10120, 11132, 13915, 15928, 16652, 19910, 20815, 21901, 22264, 27830, 33304, 39820, 41630, 43802, 45793, 55660, 79640, 83260, 87604, 91586, 109505, 111320, 166520, 175208, 183172, 219010, 228965, 366344, 438020, 457930, 503723, 876040, 915860, 1007446, 1831720, 2014892, 2518615, 4029784, 5037230, 10074460, 20148920]

約数ペア:

[(1, 20148920), (2, 10074460), (4, 5037230), (5, 4029784), (8, 2518615), (10, 2014892), (11, 1831720), (20, 1007446), (22, 915860), (23, 876040), (40, 503723), (44, 457930), (46, 438020), (55, 366344), (88, 228965), (92, 219010), (110, 183172), (115, 175208), (121, 166520), (181, 111320), (184, 109505), (220, 91586), (230, 87604), (242, 83260), (253, 79640), (362, 55660), (440, 45793), (460, 43802), (484, 41630), (506, 39820), (605, 33304), (724, 27830), (905, 22264), (920, 21901), (968, 20815), (1012, 19910), (1210, 16652), (1265, 15928), (1448, 13915), (1810, 11132), (1991, 10120), (2024, 9955), (2420, 8326), (2530, 7964), (2783, 7240), (3620, 5566), (3982, 5060), (4163, 4840)]