397173890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{647}}^1$

素因数の和:851

約数の個数: 64

約数和(自身を含む): 796137984

約数和(自身を除く): 398964094

約数列:

[1, 2, 5, 10, 17, 23, 34, 46, 85, 115, 157, 170, 230, 314, 391, 647, 782, 785, 1294, 1570, 1955, 2669, 3235, 3611, 3910, 5338, 6470, 7222, 10999, 13345, 14881, 18055, 21998, 26690, 29762, 36110, 54995, 61387, 74405, 101579, 109990, 122774, 148810, 203158, 252977, 306935, 505954, 507895, 613870, 1015790, 1264885, 1726843, 2336317, 2529770, 3453686, 4672634, 8634215, 11681585, 17268430, 23363170, 39717389, 79434778, 198586945, 397173890]

約数ペア:

[(1, 397173890), (2, 198586945), (5, 79434778), (10, 39717389), (17, 23363170), (23, 17268430), (34, 11681585), (46, 8634215), (85, 4672634), (115, 3453686), (157, 2529770), (170, 2336317), (230, 1726843), (314, 1264885), (391, 1015790), (647, 613870), (782, 507895), (785, 505954), (1294, 306935), (1570, 252977), (1955, 203158), (2669, 148810), (3235, 122774), (3611, 109990), (3910, 101579), (5338, 74405), (6470, 61387), (7222, 54995), (10999, 36110), (13345, 29762), (14881, 26690), (18055, 21998)]