20302675

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:148

約数の個数: 48

約数和(自身を含む): 29140992

約数和(自身を除く): 8838317

約数列:

[1, 5, 17, 23, 25, 31, 67, 85, 115, 155, 335, 391, 425, 527, 575, 713, 775, 1139, 1541, 1675, 1955, 2077, 2635, 3565, 5695, 7705, 9775, 10385, 12121, 13175, 17825, 26197, 28475, 35309, 38525, 47771, 51925, 60605, 130985, 176545, 238855, 303025, 654925, 812107, 882725, 1194275, 4060535, 20302675]

約数ペア:

[(1, 20302675), (5, 4060535), (17, 1194275), (23, 882725), (25, 812107), (31, 654925), (67, 303025), (85, 238855), (115, 176545), (155, 130985), (335, 60605), (391, 51925), (425, 47771), (527, 38525), (575, 35309), (713, 28475), (775, 26197), (1139, 17825), (1541, 13175), (1675, 12121), (1955, 10385), (2077, 9775), (2635, 7705), (3565, 5695)]