19800240

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1$

素因数の和:267

約数の個数: 160

約数和(自身を含む): 68138496

約数和(自身を除く): 48338256

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, 211, 230, 240, 255, 272, 276, 340, 345, 368, 391, 408, 422, 460, 510, 552, 633, 680, 690, 782, 816, 844, 920, 1020, 1055, 1104, 1173, 1266, 1360, 1380, 1564, 1688, 1840, 1955, 2040, 2110, 2346, 2532, 2760, 3128, 3165, 3376, 3587, 3910, 4080, 4220, 4692, 4853, 5064, 5520, 5865, 6256, 6330, 7174, 7820, 8440, 9384, 9706, 10128, 10761, 11730, 12660, 14348, 14559, 15640, 16880, 17935, 18768, 19412, 21522, 23460, 24265, 25320, 28696, 29118, 31280, 35870, 38824, 43044, 46920, 48530, 50640, 53805, 57392, 58236, 71740, 72795, 77648, 82501, 86088, 93840, 97060, 107610, 116472, 143480, 145590, 165002, 172176, 194120, 215220, 232944, 247503, 286960, 291180, 330004, 388240, 412505, 430440, 495006, 582360, 660008, 825010, 860880, 990012, 1164720, 1237515, 1320016, 1650020, 1980024, 2475030, 3300040, 3960048, 4950060, 6600080, 9900120, 19800240]

約数ペア:

[(1, 19800240), (2, 9900120), (3, 6600080), (4, 4950060), (5, 3960048), (6, 3300040), (8, 2475030), (10, 1980024), (12, 1650020), (15, 1320016), (16, 1237515), (17, 1164720), (20, 990012), (23, 860880), (24, 825010), (30, 660008), (34, 582360), (40, 495006), (46, 430440), (48, 412505), (51, 388240), (60, 330004), (68, 291180), (69, 286960), (80, 247503), (85, 232944), (92, 215220), (102, 194120), (115, 172176), (120, 165002), (136, 145590), (138, 143480), (170, 116472), (184, 107610), (204, 97060), (211, 93840), (230, 86088), (240, 82501), (255, 77648), (272, 72795), (276, 71740), (340, 58236), (345, 57392), (368, 53805), (391, 50640), (408, 48530), (422, 46920), (460, 43044), (510, 38824), (552, 35870), (633, 31280), (680, 29118), (690, 28696), (782, 25320), (816, 24265), (844, 23460), (920, 21522), (1020, 19412), (1055, 18768), (1104, 17935), (1173, 16880), (1266, 15640), (1360, 14559), (1380, 14348), (1564, 12660), (1688, 11730), (1840, 10761), (1955, 10128), (2040, 9706), (2110, 9384), (2346, 8440), (2532, 7820), (2760, 7174), (3128, 6330), (3165, 6256), (3376, 5865), (3587, 5520), (3910, 5064), (4080, 4853), (4220, 4692)]