18807420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{331}}^1\times {\mathrm{947}}^1$

素因数の和:1290

約数の個数: 48

約数和(自身を含む): 52875648

約数和(自身を除く): 34068228

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 331, 662, 947, 993, 1324, 1655, 1894, 1986, 2841, 3310, 3788, 3972, 4735, 4965, 5682, 6620, 9470, 9930, 11364, 14205, 18940, 19860, 28410, 56820, 313457, 626914, 940371, 1253828, 1567285, 1880742, 3134570, 3761484, 4701855, 6269140, 9403710, 18807420]

約数ペア:

[(1, 18807420), (2, 9403710), (3, 6269140), (4, 4701855), (5, 3761484), (6, 3134570), (10, 1880742), (12, 1567285), (15, 1253828), (20, 940371), (30, 626914), (60, 313457), (331, 56820), (662, 28410), (947, 19860), (993, 18940), (1324, 14205), (1655, 11364), (1894, 9930), (1986, 9470), (2841, 6620), (3310, 5682), (3788, 4965), (3972, 4735)]