19890510

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{907}}^1$

素因数の和:977

約数の個数: 64

約数和(自身を含む): 51777792

約数和(自身を除く): 31887282

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 30, 34, 43, 51, 85, 86, 102, 129, 170, 215, 255, 258, 430, 510, 645, 731, 907, 1290, 1462, 1814, 2193, 2721, 3655, 4386, 4535, 5442, 7310, 9070, 10965, 13605, 15419, 21930, 27210, 30838, 39001, 46257, 77095, 78002, 92514, 117003, 154190, 195005, 231285, 234006, 390010, 462570, 585015, 663017, 1170030, 1326034, 1989051, 3315085, 3978102, 6630170, 9945255, 19890510]

約数ペア:

[(1, 19890510), (2, 9945255), (3, 6630170), (5, 3978102), (6, 3315085), (10, 1989051), (15, 1326034), (17, 1170030), (30, 663017), (34, 585015), (43, 462570), (51, 390010), (85, 234006), (86, 231285), (102, 195005), (129, 154190), (170, 117003), (215, 92514), (255, 78002), (258, 77095), (430, 46257), (510, 39001), (645, 30838), (731, 27210), (907, 21930), (1290, 15419), (1462, 13605), (1814, 10965), (2193, 9070), (2721, 7310), (3655, 5442), (4386, 4535)]