1221390

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{331}}^1$

素因数の和:385

約数の個数: 48

約数和(自身を含む): 3262896

約数和(自身を除く): 2041506

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 41, 45, 82, 90, 123, 205, 246, 331, 369, 410, 615, 662, 738, 993, 1230, 1655, 1845, 1986, 2979, 3310, 3690, 4965, 5958, 9930, 13571, 14895, 27142, 29790, 40713, 67855, 81426, 122139, 135710, 203565, 244278, 407130, 610695, 1221390]

約数ペア:

[(1, 1221390), (2, 610695), (3, 407130), (5, 244278), (6, 203565), (9, 135710), (10, 122139), (15, 81426), (18, 67855), (30, 40713), (41, 29790), (45, 27142), (82, 14895), (90, 13571), (123, 9930), (205, 5958), (246, 4965), (331, 3690), (369, 3310), (410, 2979), (615, 1986), (662, 1845), (738, 1655), (993, 1230)]