18961020

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:141

約数の個数: 192

約数和(自身を含む): 66138240

約数和(自身を除く): 47177220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 36, 37, 39, 45, 52, 54, 60, 65, 73, 74, 78, 90, 108, 111, 117, 130, 135, 146, 148, 156, 180, 185, 195, 219, 222, 234, 260, 270, 292, 333, 351, 365, 370, 390, 438, 444, 468, 481, 540, 555, 585, 657, 666, 702, 730, 740, 780, 876, 949, 962, 999, 1095, 1110, 1170, 1314, 1332, 1404, 1443, 1460, 1665, 1755, 1898, 1924, 1971, 1998, 2190, 2220, 2340, 2405, 2628, 2701, 2847, 2886, 3285, 3330, 3510, 3796, 3942, 3996, 4329, 4380, 4745, 4810, 4995, 5402, 5694, 5772, 6570, 6660, 7020, 7215, 7884, 8103, 8541, 8658, 9490, 9620, 9855, 9990, 10804, 11388, 12987, 13140, 13505, 14235, 14430, 16206, 17082, 17316, 18980, 19710, 19980, 21645, 24309, 25623, 25974, 27010, 28470, 28860, 32412, 34164, 35113, 39420, 40515, 42705, 43290, 48618, 51246, 51948, 54020, 56940, 64935, 70226, 72927, 81030, 85410, 86580, 97236, 102492, 105339, 121545, 128115, 129870, 140452, 145854, 162060, 170820, 175565, 210678, 243090, 256230, 259740, 291708, 316017, 351130, 364635, 421356, 486180, 512460, 526695, 632034, 702260, 729270, 948051, 1053390, 1264068, 1458540, 1580085, 1896102, 2106780, 3160170, 3792204, 4740255, 6320340, 9480510, 18961020]

約数ペア:

[(1, 18961020), (2, 9480510), (3, 6320340), (4, 4740255), (5, 3792204), (6, 3160170), (9, 2106780), (10, 1896102), (12, 1580085), (13, 1458540), (15, 1264068), (18, 1053390), (20, 948051), (26, 729270), (27, 702260), (30, 632034), (36, 526695), (37, 512460), (39, 486180), (45, 421356), (52, 364635), (54, 351130), (60, 316017), (65, 291708), (73, 259740), (74, 256230), (78, 243090), (90, 210678), (108, 175565), (111, 170820), (117, 162060), (130, 145854), (135, 140452), (146, 129870), (148, 128115), (156, 121545), (180, 105339), (185, 102492), (195, 97236), (219, 86580), (222, 85410), (234, 81030), (260, 72927), (270, 70226), (292, 64935), (333, 56940), (351, 54020), (365, 51948), (370, 51246), (390, 48618), (438, 43290), (444, 42705), (468, 40515), (481, 39420), (540, 35113), (555, 34164), (585, 32412), (657, 28860), (666, 28470), (702, 27010), (730, 25974), (740, 25623), (780, 24309), (876, 21645), (949, 19980), (962, 19710), (999, 18980), (1095, 17316), (1110, 17082), (1170, 16206), (1314, 14430), (1332, 14235), (1404, 13505), (1443, 13140), (1460, 12987), (1665, 11388), (1755, 10804), (1898, 9990), (1924, 9855), (1971, 9620), (1998, 9490), (2190, 8658), (2220, 8541), (2340, 8103), (2405, 7884), (2628, 7215), (2701, 7020), (2847, 6660), (2886, 6570), (3285, 5772), (3330, 5694), (3510, 5402), (3796, 4995), (3942, 4810), (3996, 4745), (4329, 4380)]