19960020

素因数分解:

$2^2\times 3^6\times 5^1\times {\mathrm{37}}^2$

素因数の和:101

約数の個数: 126

約数和(自身を含む): 64589742

約数和(自身を除く): 44629722

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 37, 45, 54, 60, 74, 81, 90, 108, 111, 135, 148, 162, 180, 185, 222, 243, 270, 324, 333, 370, 405, 444, 486, 540, 555, 666, 729, 740, 810, 972, 999, 1110, 1215, 1332, 1369, 1458, 1620, 1665, 1998, 2220, 2430, 2738, 2916, 2997, 3330, 3645, 3996, 4107, 4860, 4995, 5476, 5994, 6660, 6845, 7290, 8214, 8991, 9990, 11988, 12321, 13690, 14580, 14985, 16428, 17982, 19980, 20535, 24642, 26973, 27380, 29970, 35964, 36963, 41070, 44955, 49284, 53946, 59940, 61605, 73926, 82140, 89910, 107892, 110889, 123210, 134865, 147852, 179820, 184815, 221778, 246420, 269730, 332667, 369630, 443556, 539460, 554445, 665334, 739260, 998001, 1108890, 1330668, 1663335, 1996002, 2217780, 3326670, 3992004, 4990005, 6653340, 9980010, 19960020]

約数ペア:

[(1, 19960020), (2, 9980010), (3, 6653340), (4, 4990005), (5, 3992004), (6, 3326670), (9, 2217780), (10, 1996002), (12, 1663335), (15, 1330668), (18, 1108890), (20, 998001), (27, 739260), (30, 665334), (36, 554445), (37, 539460), (45, 443556), (54, 369630), (60, 332667), (74, 269730), (81, 246420), (90, 221778), (108, 184815), (111, 179820), (135, 147852), (148, 134865), (162, 123210), (180, 110889), (185, 107892), (222, 89910), (243, 82140), (270, 73926), (324, 61605), (333, 59940), (370, 53946), (405, 49284), (444, 44955), (486, 41070), (540, 36963), (555, 35964), (666, 29970), (729, 27380), (740, 26973), (810, 24642), (972, 20535), (999, 19980), (1110, 17982), (1215, 16428), (1332, 14985), (1369, 14580), (1458, 13690), (1620, 12321), (1665, 11988), (1998, 9990), (2220, 8991), (2430, 8214), (2738, 7290), (2916, 6845), (2997, 6660), (3330, 5994), (3645, 5476), (3996, 4995), (4107, 4860)]