27921820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{2003}}^1$

素因数の和:2070

約数の個数: 48

約数和(自身を含む): 63631008

約数和(自身を除く): 35709188

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 41, 68, 82, 85, 164, 170, 205, 340, 410, 697, 820, 1394, 2003, 2788, 3485, 4006, 6970, 8012, 10015, 13940, 20030, 34051, 40060, 68102, 82123, 136204, 164246, 170255, 328492, 340510, 410615, 681020, 821230, 1396091, 1642460, 2792182, 5584364, 6980455, 13960910, 27921820]

約数ペア:

[(1, 27921820), (2, 13960910), (4, 6980455), (5, 5584364), (10, 2792182), (17, 1642460), (20, 1396091), (34, 821230), (41, 681020), (68, 410615), (82, 340510), (85, 328492), (164, 170255), (170, 164246), (205, 136204), (340, 82123), (410, 68102), (697, 40060), (820, 34051), (1394, 20030), (2003, 13940), (2788, 10015), (3485, 8012), (4006, 6970)]