21800400

素因数分解:

$2^4\times 3^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{491}}^1$

素因数の和:549

約数の個数: 120

約数和(自身を含む): 71867424

約数和(自身を除く): 50067024

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 37, 40, 48, 50, 60, 74, 75, 80, 100, 111, 120, 148, 150, 185, 200, 222, 240, 296, 300, 370, 400, 444, 491, 555, 592, 600, 740, 888, 925, 982, 1110, 1200, 1473, 1480, 1776, 1850, 1964, 2220, 2455, 2775, 2946, 2960, 3700, 3928, 4440, 4910, 5550, 5892, 7365, 7400, 7856, 8880, 9820, 11100, 11784, 12275, 14730, 14800, 18167, 19640, 22200, 23568, 24550, 29460, 36334, 36825, 39280, 44400, 49100, 54501, 58920, 72668, 73650, 90835, 98200, 109002, 117840, 145336, 147300, 181670, 196400, 218004, 272505, 290672, 294600, 363340, 436008, 454175, 545010, 589200, 726680, 872016, 908350, 1090020, 1362525, 1453360, 1816700, 2180040, 2725050, 3633400, 4360080, 5450100, 7266800, 10900200, 21800400]

約数ペア:

[(1, 21800400), (2, 10900200), (3, 7266800), (4, 5450100), (5, 4360080), (6, 3633400), (8, 2725050), (10, 2180040), (12, 1816700), (15, 1453360), (16, 1362525), (20, 1090020), (24, 908350), (25, 872016), (30, 726680), (37, 589200), (40, 545010), (48, 454175), (50, 436008), (60, 363340), (74, 294600), (75, 290672), (80, 272505), (100, 218004), (111, 196400), (120, 181670), (148, 147300), (150, 145336), (185, 117840), (200, 109002), (222, 98200), (240, 90835), (296, 73650), (300, 72668), (370, 58920), (400, 54501), (444, 49100), (491, 44400), (555, 39280), (592, 36825), (600, 36334), (740, 29460), (888, 24550), (925, 23568), (982, 22200), (1110, 19640), (1200, 18167), (1473, 14800), (1480, 14730), (1776, 12275), (1850, 11784), (1964, 11100), (2220, 9820), (2455, 8880), (2775, 7856), (2946, 7400), (2960, 7365), (3700, 5892), (3928, 5550), (4440, 4910)]