20402150

素因数分解:

$2^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{157}}^1$

素因数の和:305

約数の個数: 48

約数和(自身を含む): 40202784

約数和(自身を除く): 19800634

約数列:

[1, 2, 5, 10, 23, 25, 46, 50, 113, 115, 157, 226, 230, 314, 565, 575, 785, 1130, 1150, 1570, 2599, 2825, 3611, 3925, 5198, 5650, 7222, 7850, 12995, 17741, 18055, 25990, 35482, 36110, 64975, 88705, 90275, 129950, 177410, 180550, 408043, 443525, 816086, 887050, 2040215, 4080430, 10201075, 20402150]

約数ペア:

[(1, 20402150), (2, 10201075), (5, 4080430), (10, 2040215), (23, 887050), (25, 816086), (46, 443525), (50, 408043), (113, 180550), (115, 177410), (157, 129950), (226, 90275), (230, 88705), (314, 64975), (565, 36110), (575, 35482), (785, 25990), (1130, 18055), (1150, 17741), (1570, 12995), (2599, 7850), (2825, 7222), (3611, 5650), (3925, 5198)]