1640675840

素因数分解:

$2^9\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{379}}^1$

素因数の和:510

約数の個数: 160

約数和(自身を含む): 4198392000

約数和(自身を除く): 2557716160

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 89, 95, 128, 152, 160, 178, 190, 256, 304, 320, 356, 379, 380, 445, 512, 608, 640, 712, 758, 760, 890, 1216, 1280, 1424, 1516, 1520, 1691, 1780, 1895, 2432, 2560, 2848, 3032, 3040, 3382, 3560, 3790, 4864, 5696, 6064, 6080, 6764, 7120, 7201, 7580, 8455, 9728, 11392, 12128, 12160, 13528, 14240, 14402, 15160, 16910, 22784, 24256, 24320, 27056, 28480, 28804, 30320, 33731, 33820, 36005, 45568, 48512, 48640, 54112, 56960, 57608, 60640, 67462, 67640, 72010, 97024, 108224, 113920, 115216, 121280, 134924, 135280, 144020, 168655, 194048, 216448, 227840, 230432, 242560, 269848, 270560, 288040, 337310, 432896, 460864, 485120, 539696, 541120, 576080, 640889, 674620, 865792, 921728, 970240, 1079392, 1082240, 1152160, 1281778, 1349240, 1843456, 2158784, 2164480, 2304320, 2563556, 2698480, 3204445, 3686912, 4317568, 4328960, 4608640, 5127112, 5396960, 6408890, 8635136, 9217280, 10254224, 10793920, 12817780, 17270272, 18434560, 20508448, 21587840, 25635560, 41016896, 43175680, 51271120, 82033792, 86351360, 102542240, 164067584, 205084480, 328135168, 410168960, 820337920, 1640675840]

約数ペア:

[(1, 1640675840), (2, 820337920), (4, 410168960), (5, 328135168), (8, 205084480), (10, 164067584), (16, 102542240), (19, 86351360), (20, 82033792), (32, 51271120), (38, 43175680), (40, 41016896), (64, 25635560), (76, 21587840), (80, 20508448), (89, 18434560), (95, 17270272), (128, 12817780), (152, 10793920), (160, 10254224), (178, 9217280), (190, 8635136), (256, 6408890), (304, 5396960), (320, 5127112), (356, 4608640), (379, 4328960), (380, 4317568), (445, 3686912), (512, 3204445), (608, 2698480), (640, 2563556), (712, 2304320), (758, 2164480), (760, 2158784), (890, 1843456), (1216, 1349240), (1280, 1281778), (1424, 1152160), (1516, 1082240), (1520, 1079392), (1691, 970240), (1780, 921728), (1895, 865792), (2432, 674620), (2560, 640889), (2848, 576080), (3032, 541120), (3040, 539696), (3382, 485120), (3560, 460864), (3790, 432896), (4864, 337310), (5696, 288040), (6064, 270560), (6080, 269848), (6764, 242560), (7120, 230432), (7201, 227840), (7580, 216448), (8455, 194048), (9728, 168655), (11392, 144020), (12128, 135280), (12160, 134924), (13528, 121280), (14240, 115216), (14402, 113920), (15160, 108224), (16910, 97024), (22784, 72010), (24256, 67640), (24320, 67462), (27056, 60640), (28480, 57608), (28804, 56960), (30320, 54112), (33731, 48640), (33820, 48512), (36005, 45568)]