18866900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{631}}^1$

素因数の和:681

約数の個数: 72

約数和(自身を含む): 46080384

約数和(自身を除く): 27213484

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 25, 26, 46, 50, 52, 65, 92, 100, 115, 130, 230, 260, 299, 325, 460, 575, 598, 631, 650, 1150, 1196, 1262, 1300, 1495, 2300, 2524, 2990, 3155, 5980, 6310, 7475, 8203, 12620, 14513, 14950, 15775, 16406, 29026, 29900, 31550, 32812, 41015, 58052, 63100, 72565, 82030, 145130, 164060, 188669, 205075, 290260, 362825, 377338, 410150, 725650, 754676, 820300, 943345, 1451300, 1886690, 3773380, 4716725, 9433450, 18866900]

約数ペア:

[(1, 18866900), (2, 9433450), (4, 4716725), (5, 3773380), (10, 1886690), (13, 1451300), (20, 943345), (23, 820300), (25, 754676), (26, 725650), (46, 410150), (50, 377338), (52, 362825), (65, 290260), (92, 205075), (100, 188669), (115, 164060), (130, 145130), (230, 82030), (260, 72565), (299, 63100), (325, 58052), (460, 41015), (575, 32812), (598, 31550), (631, 29900), (650, 29026), (1150, 16406), (1196, 15775), (1262, 14950), (1300, 14513), (1495, 12620), (2300, 8203), (2524, 7475), (2990, 6310), (3155, 5980)]