19743990

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{631}}^1$

素因数の和:797

約数の個数: 64

約数和(自身を含む): 54604800

約数和(自身を除く): 34860810

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 149, 210, 298, 447, 631, 745, 894, 1043, 1262, 1490, 1893, 2086, 2235, 3129, 3155, 3786, 4417, 4470, 5215, 6258, 6310, 8834, 9465, 10430, 13251, 15645, 18930, 22085, 26502, 31290, 44170, 66255, 94019, 132510, 188038, 282057, 470095, 564114, 658133, 940190, 1316266, 1410285, 1974399, 2820570, 3290665, 3948798, 6581330, 9871995, 19743990]

約数ペア:

[(1, 19743990), (2, 9871995), (3, 6581330), (5, 3948798), (6, 3290665), (7, 2820570), (10, 1974399), (14, 1410285), (15, 1316266), (21, 940190), (30, 658133), (35, 564114), (42, 470095), (70, 282057), (105, 188038), (149, 132510), (210, 94019), (298, 66255), (447, 44170), (631, 31290), (745, 26502), (894, 22085), (1043, 18930), (1262, 15645), (1490, 13251), (1893, 10430), (2086, 9465), (2235, 8834), (3129, 6310), (3155, 6258), (3786, 5215), (4417, 4470)]