221279940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2879}}^1$

素因数の和:2962

約数の個数: 144

約数和(自身を含む): 779950080

約数和(自身を除く): 558670140

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 61, 63, 70, 84, 90, 105, 122, 126, 140, 180, 183, 210, 244, 252, 305, 315, 366, 420, 427, 549, 610, 630, 732, 854, 915, 1098, 1220, 1260, 1281, 1708, 1830, 2135, 2196, 2562, 2745, 2879, 3660, 3843, 4270, 5124, 5490, 5758, 6405, 7686, 8540, 8637, 10980, 11516, 12810, 14395, 15372, 17274, 19215, 20153, 25620, 25911, 28790, 34548, 38430, 40306, 43185, 51822, 57580, 60459, 76860, 80612, 86370, 100765, 103644, 120918, 129555, 172740, 175619, 181377, 201530, 241836, 259110, 302295, 351238, 362754, 403060, 518220, 526857, 604590, 702476, 725508, 878095, 906885, 1053714, 1209180, 1229333, 1580571, 1756190, 1813770, 2107428, 2458666, 2634285, 3161142, 3512380, 3627540, 3687999, 4917332, 5268570, 6146665, 6322284, 7375998, 7902855, 10537140, 11063997, 12293330, 14751996, 15805710, 18439995, 22127994, 24586660, 31611420, 36879990, 44255988, 55319985, 73759980, 110639970, 221279940]

約数ペア:

[(1, 221279940), (2, 110639970), (3, 73759980), (4, 55319985), (5, 44255988), (6, 36879990), (7, 31611420), (9, 24586660), (10, 22127994), (12, 18439995), (14, 15805710), (15, 14751996), (18, 12293330), (20, 11063997), (21, 10537140), (28, 7902855), (30, 7375998), (35, 6322284), (36, 6146665), (42, 5268570), (45, 4917332), (60, 3687999), (61, 3627540), (63, 3512380), (70, 3161142), (84, 2634285), (90, 2458666), (105, 2107428), (122, 1813770), (126, 1756190), (140, 1580571), (180, 1229333), (183, 1209180), (210, 1053714), (244, 906885), (252, 878095), (305, 725508), (315, 702476), (366, 604590), (420, 526857), (427, 518220), (549, 403060), (610, 362754), (630, 351238), (732, 302295), (854, 259110), (915, 241836), (1098, 201530), (1220, 181377), (1260, 175619), (1281, 172740), (1708, 129555), (1830, 120918), (2135, 103644), (2196, 100765), (2562, 86370), (2745, 80612), (2879, 76860), (3660, 60459), (3843, 57580), (4270, 51822), (5124, 43185), (5490, 40306), (5758, 38430), (6405, 34548), (7686, 28790), (8540, 25911), (8637, 25620), (10980, 20153), (11516, 19215), (12810, 17274), (14395, 15372)]