40042880

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:164

約数の個数: 128

約数和(自身を含む): 104652000

約数和(自身を除く): 64609120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 37, 38, 40, 64, 74, 76, 80, 89, 95, 128, 148, 152, 160, 178, 185, 190, 296, 304, 320, 356, 370, 380, 445, 592, 608, 640, 703, 712, 740, 760, 890, 1184, 1216, 1406, 1424, 1480, 1520, 1691, 1780, 2368, 2432, 2812, 2848, 2960, 3040, 3293, 3382, 3515, 3560, 4736, 5624, 5696, 5920, 6080, 6586, 6764, 7030, 7120, 8455, 11248, 11392, 11840, 12160, 13172, 13528, 14060, 14240, 16465, 16910, 22496, 23680, 26344, 27056, 28120, 28480, 32930, 33820, 44992, 52688, 54112, 56240, 56960, 62567, 65860, 67640, 89984, 105376, 108224, 112480, 125134, 131720, 135280, 210752, 216448, 224960, 250268, 263440, 270560, 312835, 421504, 449920, 500536, 526880, 541120, 625670, 1001072, 1053760, 1082240, 1251340, 2002144, 2107520, 2502680, 4004288, 5005360, 8008576, 10010720, 20021440, 40042880]

約数ペア:

[(1, 40042880), (2, 20021440), (4, 10010720), (5, 8008576), (8, 5005360), (10, 4004288), (16, 2502680), (19, 2107520), (20, 2002144), (32, 1251340), (37, 1082240), (38, 1053760), (40, 1001072), (64, 625670), (74, 541120), (76, 526880), (80, 500536), (89, 449920), (95, 421504), (128, 312835), (148, 270560), (152, 263440), (160, 250268), (178, 224960), (185, 216448), (190, 210752), (296, 135280), (304, 131720), (320, 125134), (356, 112480), (370, 108224), (380, 105376), (445, 89984), (592, 67640), (608, 65860), (640, 62567), (703, 56960), (712, 56240), (740, 54112), (760, 52688), (890, 44992), (1184, 33820), (1216, 32930), (1406, 28480), (1424, 28120), (1480, 27056), (1520, 26344), (1691, 23680), (1780, 22496), (2368, 16910), (2432, 16465), (2812, 14240), (2848, 14060), (2960, 13528), (3040, 13172), (3293, 12160), (3382, 11840), (3515, 11392), (3560, 11248), (4736, 8455), (5624, 7120), (5696, 7030), (5920, 6764), (6080, 6586)]