399479260

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{8969}}^1$

素因数の和:9126

約数の個数: 48

約数和(自身を含む): 895134240

約数和(自身を除く): 495654980

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 131, 170, 262, 340, 524, 655, 1310, 2227, 2620, 4454, 8908, 8969, 11135, 17938, 22270, 35876, 44540, 44845, 89690, 152473, 179380, 304946, 609892, 762365, 1174939, 1524730, 2349878, 3049460, 4699756, 5874695, 11749390, 19973963, 23498780, 39947926, 79895852, 99869815, 199739630, 399479260]

約数ペア:

[(1, 399479260), (2, 199739630), (4, 99869815), (5, 79895852), (10, 39947926), (17, 23498780), (20, 19973963), (34, 11749390), (68, 5874695), (85, 4699756), (131, 3049460), (170, 2349878), (262, 1524730), (340, 1174939), (524, 762365), (655, 609892), (1310, 304946), (2227, 179380), (2620, 152473), (4454, 89690), (8908, 44845), (8969, 44540), (11135, 35876), (17938, 22270)]