19918920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1031}}^1$

素因数の和:1075

約数の個数: 128

約数和(自身を含む): 71331840

約数和(自身を除く): 51412920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 23, 24, 28, 30, 35, 40, 42, 46, 56, 60, 69, 70, 84, 92, 105, 115, 120, 138, 140, 161, 168, 184, 210, 230, 276, 280, 322, 345, 420, 460, 483, 552, 644, 690, 805, 840, 920, 966, 1031, 1288, 1380, 1610, 1932, 2062, 2415, 2760, 3093, 3220, 3864, 4124, 4830, 5155, 6186, 6440, 7217, 8248, 9660, 10310, 12372, 14434, 15465, 19320, 20620, 21651, 23713, 24744, 28868, 30930, 36085, 41240, 43302, 47426, 57736, 61860, 71139, 72170, 86604, 94852, 108255, 118565, 123720, 142278, 144340, 165991, 173208, 189704, 216510, 237130, 284556, 288680, 331982, 355695, 433020, 474260, 497973, 569112, 663964, 711390, 829955, 866040, 948520, 995946, 1327928, 1422780, 1659910, 1991892, 2489865, 2845560, 3319820, 3983784, 4979730, 6639640, 9959460, 19918920]

約数ペア:

[(1, 19918920), (2, 9959460), (3, 6639640), (4, 4979730), (5, 3983784), (6, 3319820), (7, 2845560), (8, 2489865), (10, 1991892), (12, 1659910), (14, 1422780), (15, 1327928), (20, 995946), (21, 948520), (23, 866040), (24, 829955), (28, 711390), (30, 663964), (35, 569112), (40, 497973), (42, 474260), (46, 433020), (56, 355695), (60, 331982), (69, 288680), (70, 284556), (84, 237130), (92, 216510), (105, 189704), (115, 173208), (120, 165991), (138, 144340), (140, 142278), (161, 123720), (168, 118565), (184, 108255), (210, 94852), (230, 86604), (276, 72170), (280, 71139), (322, 61860), (345, 57736), (420, 47426), (460, 43302), (483, 41240), (552, 36085), (644, 30930), (690, 28868), (805, 24744), (840, 23713), (920, 21651), (966, 20620), (1031, 19320), (1288, 15465), (1380, 14434), (1610, 12372), (1932, 10310), (2062, 9660), (2415, 8248), (2760, 7217), (3093, 6440), (3220, 6186), (3864, 5155), (4124, 4830)]