861674580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{21661}}^1$

素因数の和:21706

約数の個数: 144

約数和(自身を含む): 2980517904

約数和(自身を除く): 2118843324

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 17, 18, 20, 26, 30, 34, 36, 39, 45, 51, 52, 60, 65, 68, 78, 85, 90, 102, 117, 130, 153, 156, 170, 180, 195, 204, 221, 234, 255, 260, 306, 340, 390, 442, 468, 510, 585, 612, 663, 765, 780, 884, 1020, 1105, 1170, 1326, 1530, 1989, 2210, 2340, 2652, 3060, 3315, 3978, 4420, 6630, 7956, 9945, 13260, 19890, 21661, 39780, 43322, 64983, 86644, 108305, 129966, 194949, 216610, 259932, 281593, 324915, 368237, 389898, 433220, 563186, 649830, 736474, 779796, 844779, 974745, 1104711, 1126372, 1299660, 1407965, 1472948, 1689558, 1841185, 1949490, 2209422, 2534337, 2815930, 3314133, 3379116, 3682370, 3898980, 4223895, 4418844, 4787081, 5068674, 5523555, 5631860, 6628266, 7364740, 8447790, 9574162, 10137348, 11047110, 12671685, 13256532, 14361243, 16570665, 16895580, 19148324, 22094220, 23935405, 25343370, 28722486, 33141330, 43083729, 47870810, 50686740, 57444972, 66282660, 71806215, 86167458, 95741620, 143612430, 172334916, 215418645, 287224860, 430837290, 861674580]

約数ペア:

[(1, 861674580), (2, 430837290), (3, 287224860), (4, 215418645), (5, 172334916), (6, 143612430), (9, 95741620), (10, 86167458), (12, 71806215), (13, 66282660), (15, 57444972), (17, 50686740), (18, 47870810), (20, 43083729), (26, 33141330), (30, 28722486), (34, 25343370), (36, 23935405), (39, 22094220), (45, 19148324), (51, 16895580), (52, 16570665), (60, 14361243), (65, 13256532), (68, 12671685), (78, 11047110), (85, 10137348), (90, 9574162), (102, 8447790), (117, 7364740), (130, 6628266), (153, 5631860), (156, 5523555), (170, 5068674), (180, 4787081), (195, 4418844), (204, 4223895), (221, 3898980), (234, 3682370), (255, 3379116), (260, 3314133), (306, 2815930), (340, 2534337), (390, 2209422), (442, 1949490), (468, 1841185), (510, 1689558), (585, 1472948), (612, 1407965), (663, 1299660), (765, 1126372), (780, 1104711), (884, 974745), (1020, 844779), (1105, 779796), (1170, 736474), (1326, 649830), (1530, 563186), (1989, 433220), (2210, 389898), (2340, 368237), (2652, 324915), (3060, 281593), (3315, 259932), (3978, 216610), (4420, 194949), (6630, 129966), (7956, 108305), (9945, 86644), (13260, 64983), (19890, 43322), (21661, 39780)]