398820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1$

素因数の和:69

約数の個数: 72

約数和(自身を含む): 1237824

約数和(自身を除く): 839004

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 23, 30, 34, 46, 51, 60, 68, 69, 85, 92, 102, 115, 138, 170, 204, 230, 255, 276, 289, 340, 345, 391, 460, 510, 578, 690, 782, 867, 1020, 1156, 1173, 1380, 1445, 1564, 1734, 1955, 2346, 2890, 3468, 3910, 4335, 4692, 5780, 5865, 6647, 7820, 8670, 11730, 13294, 17340, 19941, 23460, 26588, 33235, 39882, 66470, 79764, 99705, 132940, 199410, 398820]

約数ペア:

[(1, 398820), (2, 199410), (3, 132940), (4, 99705), (5, 79764), (6, 66470), (10, 39882), (12, 33235), (15, 26588), (17, 23460), (20, 19941), (23, 17340), (30, 13294), (34, 11730), (46, 8670), (51, 7820), (60, 6647), (68, 5865), (69, 5780), (85, 4692), (92, 4335), (102, 3910), (115, 3468), (138, 2890), (170, 2346), (204, 1955), (230, 1734), (255, 1564), (276, 1445), (289, 1380), (340, 1173), (345, 1156), (391, 1020), (460, 867), (510, 782), (578, 690)]