21597660

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{281}}^1$

素因数の和:364

約数の個数: 144

約数和(自身を含む): 76370112

約数和(自身を除く): 54772452

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, 281, 305, 315, 366, 420, 427, 549, 562, 610, 630, 732, 843, 854, 915, 1098, 1124, 1220, 1260, 1281, 1405, 1686, 1708, 1830, 1967, 2135, 2196, 2529, 2562, 2745, 2810, 3372, 3660, 3843, 3934, 4215, 4270, 5058, 5124, 5490, 5620, 5901, 6405, 7686, 7868, 8430, 8540, 9835, 10116, 10980, 11802, 12645, 12810, 15372, 16860, 17141, 17703, 19215, 19670, 23604, 25290, 25620, 29505, 34282, 35406, 38430, 39340, 50580, 51423, 59010, 68564, 70812, 76860, 85705, 88515, 102846, 118020, 119987, 154269, 171410, 177030, 205692, 239974, 257115, 308538, 342820, 354060, 359961, 479948, 514230, 599935, 617076, 719922, 771345, 1028460, 1079883, 1199870, 1439844, 1542690, 1799805, 2159766, 2399740, 3085380, 3599610, 4319532, 5399415, 7199220, 10798830, 21597660]

約数ペア:

[(1, 21597660), (2, 10798830), (3, 7199220), (4, 5399415), (5, 4319532), (6, 3599610), (7, 3085380), (9, 2399740), (10, 2159766), (12, 1799805), (14, 1542690), (15, 1439844), (18, 1199870), (20, 1079883), (21, 1028460), (28, 771345), (30, 719922), (35, 617076), (36, 599935), (42, 514230), (45, 479948), (60, 359961), (61, 354060), (63, 342820), (70, 308538), (84, 257115), (90, 239974), (105, 205692), (122, 177030), (126, 171410), (140, 154269), (180, 119987), (183, 118020), (210, 102846), (244, 88515), (252, 85705), (281, 76860), (305, 70812), (315, 68564), (366, 59010), (420, 51423), (427, 50580), (549, 39340), (562, 38430), (610, 35406), (630, 34282), (732, 29505), (843, 25620), (854, 25290), (915, 23604), (1098, 19670), (1124, 19215), (1220, 17703), (1260, 17141), (1281, 16860), (1405, 15372), (1686, 12810), (1708, 12645), (1830, 11802), (1967, 10980), (2135, 10116), (2196, 9835), (2529, 8540), (2562, 8430), (2745, 7868), (2810, 7686), (3372, 6405), (3660, 5901), (3843, 5620), (3934, 5490), (4215, 5124), (4270, 5058)]