890665720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1\times {\mathrm{347}}^1$

素因数の和:557

約数の個数: 128

約数和(自身を含む): 2345241600

約数和(自身を除く): 1454575880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 89, 103, 140, 178, 206, 280, 347, 356, 412, 445, 515, 623, 694, 712, 721, 824, 890, 1030, 1246, 1388, 1442, 1735, 1780, 2060, 2429, 2492, 2776, 2884, 3115, 3470, 3560, 3605, 4120, 4858, 4984, 5768, 6230, 6940, 7210, 9167, 9716, 12145, 12460, 13880, 14420, 18334, 19432, 24290, 24920, 28840, 30883, 35741, 36668, 45835, 48580, 61766, 64169, 71482, 73336, 91670, 97160, 123532, 128338, 142964, 154415, 178705, 183340, 216181, 247064, 250187, 256676, 285928, 308830, 320845, 357410, 366680, 432362, 500374, 513352, 617660, 641690, 714820, 864724, 1000748, 1080905, 1235320, 1250935, 1283380, 1429640, 1729448, 2001496, 2161810, 2501870, 2566760, 3180949, 4323620, 5003740, 6361898, 8647240, 10007480, 12723796, 15904745, 22266643, 25447592, 31809490, 44533286, 63618980, 89066572, 111333215, 127237960, 178133144, 222666430, 445332860, 890665720]

約数ペア:

[(1, 890665720), (2, 445332860), (4, 222666430), (5, 178133144), (7, 127237960), (8, 111333215), (10, 89066572), (14, 63618980), (20, 44533286), (28, 31809490), (35, 25447592), (40, 22266643), (56, 15904745), (70, 12723796), (89, 10007480), (103, 8647240), (140, 6361898), (178, 5003740), (206, 4323620), (280, 3180949), (347, 2566760), (356, 2501870), (412, 2161810), (445, 2001496), (515, 1729448), (623, 1429640), (694, 1283380), (712, 1250935), (721, 1235320), (824, 1080905), (890, 1000748), (1030, 864724), (1246, 714820), (1388, 641690), (1442, 617660), (1735, 513352), (1780, 500374), (2060, 432362), (2429, 366680), (2492, 357410), (2776, 320845), (2884, 308830), (3115, 285928), (3470, 256676), (3560, 250187), (3605, 247064), (4120, 216181), (4858, 183340), (4984, 178705), (5768, 154415), (6230, 142964), (6940, 128338), (7210, 123532), (9167, 97160), (9716, 91670), (12145, 73336), (12460, 71482), (13880, 64169), (14420, 61766), (18334, 48580), (19432, 45835), (24290, 36668), (24920, 35741), (28840, 30883)]