2178888880

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{59}}^1\times {\mathrm{9421}}^1$

素因数の和:9507

約数の個数: 120

約数和(自身を含む): 5993522640

約数和(自身を除く): 3814633760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 59, 70, 80, 98, 112, 118, 140, 196, 236, 245, 280, 295, 392, 413, 472, 490, 560, 590, 784, 826, 944, 980, 1180, 1652, 1960, 2065, 2360, 2891, 3304, 3920, 4130, 4720, 5782, 6608, 8260, 9421, 11564, 14455, 16520, 18842, 23128, 28910, 33040, 37684, 46256, 47105, 57820, 65947, 75368, 94210, 115640, 131894, 150736, 188420, 231280, 263788, 329735, 376840, 461629, 527576, 555839, 659470, 753680, 923258, 1055152, 1111678, 1318940, 1846516, 2223356, 2308145, 2637880, 2779195, 3693032, 3890873, 4446712, 4616290, 5275760, 5558390, 7386064, 7781746, 8893424, 9232580, 11116780, 15563492, 18465160, 19454365, 22233560, 27236111, 31126984, 36930320, 38908730, 44467120, 54472222, 62253968, 77817460, 108944444, 136180555, 155634920, 217888888, 272361110, 311269840, 435777776, 544722220, 1089444440, 2178888880]

約数ペア:

[(1, 2178888880), (2, 1089444440), (4, 544722220), (5, 435777776), (7, 311269840), (8, 272361110), (10, 217888888), (14, 155634920), (16, 136180555), (20, 108944444), (28, 77817460), (35, 62253968), (40, 54472222), (49, 44467120), (56, 38908730), (59, 36930320), (70, 31126984), (80, 27236111), (98, 22233560), (112, 19454365), (118, 18465160), (140, 15563492), (196, 11116780), (236, 9232580), (245, 8893424), (280, 7781746), (295, 7386064), (392, 5558390), (413, 5275760), (472, 4616290), (490, 4446712), (560, 3890873), (590, 3693032), (784, 2779195), (826, 2637880), (944, 2308145), (980, 2223356), (1180, 1846516), (1652, 1318940), (1960, 1111678), (2065, 1055152), (2360, 923258), (2891, 753680), (3304, 659470), (3920, 555839), (4130, 527576), (4720, 461629), (5782, 376840), (6608, 329735), (8260, 263788), (9421, 231280), (11564, 188420), (14455, 150736), (16520, 131894), (18842, 115640), (23128, 94210), (28910, 75368), (33040, 65947), (37684, 57820), (46256, 47105)]