21489360

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{229}}^1$

素因数の和:285

約数の個数: 160

約数和(自身を含む): 73923840

約数和(自身を除く): 52434480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 23, 24, 30, 34, 40, 46, 48, 51, 60, 68, 69, 80, 85, 92, 102, 115, 120, 136, 138, 170, 184, 204, 229, 230, 240, 255, 272, 276, 340, 345, 368, 391, 408, 458, 460, 510, 552, 680, 687, 690, 782, 816, 916, 920, 1020, 1104, 1145, 1173, 1360, 1374, 1380, 1564, 1832, 1840, 1955, 2040, 2290, 2346, 2748, 2760, 3128, 3435, 3664, 3893, 3910, 4080, 4580, 4692, 5267, 5496, 5520, 5865, 6256, 6870, 7786, 7820, 9160, 9384, 10534, 10992, 11679, 11730, 13740, 15572, 15640, 15801, 18320, 18768, 19465, 21068, 23358, 23460, 26335, 27480, 31144, 31280, 31602, 38930, 42136, 46716, 46920, 52670, 54960, 58395, 62288, 63204, 77860, 79005, 84272, 89539, 93432, 93840, 105340, 116790, 126408, 155720, 158010, 179078, 186864, 210680, 233580, 252816, 268617, 311440, 316020, 358156, 421360, 447695, 467160, 537234, 632040, 716312, 895390, 934320, 1074468, 1264080, 1343085, 1432624, 1790780, 2148936, 2686170, 3581560, 4297872, 5372340, 7163120, 10744680, 21489360]

約数ペア:

[(1, 21489360), (2, 10744680), (3, 7163120), (4, 5372340), (5, 4297872), (6, 3581560), (8, 2686170), (10, 2148936), (12, 1790780), (15, 1432624), (16, 1343085), (17, 1264080), (20, 1074468), (23, 934320), (24, 895390), (30, 716312), (34, 632040), (40, 537234), (46, 467160), (48, 447695), (51, 421360), (60, 358156), (68, 316020), (69, 311440), (80, 268617), (85, 252816), (92, 233580), (102, 210680), (115, 186864), (120, 179078), (136, 158010), (138, 155720), (170, 126408), (184, 116790), (204, 105340), (229, 93840), (230, 93432), (240, 89539), (255, 84272), (272, 79005), (276, 77860), (340, 63204), (345, 62288), (368, 58395), (391, 54960), (408, 52670), (458, 46920), (460, 46716), (510, 42136), (552, 38930), (680, 31602), (687, 31280), (690, 31144), (782, 27480), (816, 26335), (916, 23460), (920, 23358), (1020, 21068), (1104, 19465), (1145, 18768), (1173, 18320), (1360, 15801), (1374, 15640), (1380, 15572), (1564, 13740), (1832, 11730), (1840, 11679), (1955, 10992), (2040, 10534), (2290, 9384), (2346, 9160), (2748, 7820), (2760, 7786), (3128, 6870), (3435, 6256), (3664, 5865), (3893, 5520), (3910, 5496), (4080, 5267), (4580, 4692)]