198190340

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{229}}^1\times {\mathrm{397}}^1$

素因数の和:744

約数の個数: 48

約数和(自身を含む): 422914800

約数和(自身を除く): 224724460

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 229, 397, 436, 458, 545, 794, 916, 1090, 1145, 1588, 1985, 2180, 2290, 3970, 4580, 7940, 24961, 43273, 49922, 86546, 90913, 99844, 124805, 173092, 181826, 216365, 249610, 363652, 432730, 454565, 499220, 865460, 909130, 1818260, 9909517, 19819034, 39638068, 49547585, 99095170, 198190340]

約数ペア:

[(1, 198190340), (2, 99095170), (4, 49547585), (5, 39638068), (10, 19819034), (20, 9909517), (109, 1818260), (218, 909130), (229, 865460), (397, 499220), (436, 454565), (458, 432730), (545, 363652), (794, 249610), (916, 216365), (1090, 181826), (1145, 173092), (1588, 124805), (1985, 99844), (2180, 90913), (2290, 86546), (3970, 49922), (4580, 43273), (7940, 24961)]