400351360

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1187}}^1$

素因数の和:1254

約数の個数: 128

約数和(自身を含む): 1046960640

約数和(自身を除く): 646609280

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 31, 32, 34, 40, 62, 64, 68, 80, 85, 124, 128, 136, 155, 160, 170, 248, 272, 310, 320, 340, 496, 527, 544, 620, 640, 680, 992, 1054, 1088, 1187, 1240, 1360, 1984, 2108, 2176, 2374, 2480, 2635, 2720, 3968, 4216, 4748, 4960, 5270, 5440, 5935, 8432, 9496, 9920, 10540, 10880, 11870, 16864, 18992, 19840, 20179, 21080, 23740, 33728, 36797, 37984, 40358, 42160, 47480, 67456, 73594, 75968, 80716, 84320, 94960, 100895, 147188, 151936, 161432, 168640, 183985, 189920, 201790, 294376, 322864, 337280, 367970, 379840, 403580, 588752, 625549, 645728, 735940, 759680, 807160, 1177504, 1251098, 1291456, 1471880, 1614320, 2355008, 2502196, 2582912, 2943760, 3127745, 3228640, 4710016, 5004392, 5887520, 6255490, 6457280, 10008784, 11775040, 12510980, 12914560, 20017568, 23550080, 25021960, 40035136, 50043920, 80070272, 100087840, 200175680, 400351360]

約数ペア:

[(1, 400351360), (2, 200175680), (4, 100087840), (5, 80070272), (8, 50043920), (10, 40035136), (16, 25021960), (17, 23550080), (20, 20017568), (31, 12914560), (32, 12510980), (34, 11775040), (40, 10008784), (62, 6457280), (64, 6255490), (68, 5887520), (80, 5004392), (85, 4710016), (124, 3228640), (128, 3127745), (136, 2943760), (155, 2582912), (160, 2502196), (170, 2355008), (248, 1614320), (272, 1471880), (310, 1291456), (320, 1251098), (340, 1177504), (496, 807160), (527, 759680), (544, 735940), (620, 645728), (640, 625549), (680, 588752), (992, 403580), (1054, 379840), (1088, 367970), (1187, 337280), (1240, 322864), (1360, 294376), (1984, 201790), (2108, 189920), (2176, 183985), (2374, 168640), (2480, 161432), (2635, 151936), (2720, 147188), (3968, 100895), (4216, 94960), (4748, 84320), (4960, 80716), (5270, 75968), (5440, 73594), (5935, 67456), (8432, 47480), (9496, 42160), (9920, 40358), (10540, 37984), (10880, 36797), (11870, 33728), (16864, 23740), (18992, 21080), (19840, 20179)]