51981720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3257}}^1$

素因数の和:3297

約数の個数: 128

約数和(自身を含む): 187660800

約数和(自身を除く): 135679080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 56, 57, 60, 70, 76, 84, 95, 105, 114, 120, 133, 140, 152, 168, 190, 210, 228, 266, 280, 285, 380, 399, 420, 456, 532, 570, 665, 760, 798, 840, 1064, 1140, 1330, 1596, 1995, 2280, 2660, 3192, 3257, 3990, 5320, 6514, 7980, 9771, 13028, 15960, 16285, 19542, 22799, 26056, 32570, 39084, 45598, 48855, 61883, 65140, 68397, 78168, 91196, 97710, 113995, 123766, 130280, 136794, 182392, 185649, 195420, 227990, 247532, 273588, 309415, 341985, 371298, 390840, 433181, 455980, 495064, 547176, 618830, 683970, 742596, 866362, 911960, 928245, 1237660, 1299543, 1367940, 1485192, 1732724, 1856490, 2165905, 2475320, 2599086, 2735880, 3465448, 3712980, 4331810, 5198172, 6497715, 7425960, 8663620, 10396344, 12995430, 17327240, 25990860, 51981720]

約数ペア:

[(1, 51981720), (2, 25990860), (3, 17327240), (4, 12995430), (5, 10396344), (6, 8663620), (7, 7425960), (8, 6497715), (10, 5198172), (12, 4331810), (14, 3712980), (15, 3465448), (19, 2735880), (20, 2599086), (21, 2475320), (24, 2165905), (28, 1856490), (30, 1732724), (35, 1485192), (38, 1367940), (40, 1299543), (42, 1237660), (56, 928245), (57, 911960), (60, 866362), (70, 742596), (76, 683970), (84, 618830), (95, 547176), (105, 495064), (114, 455980), (120, 433181), (133, 390840), (140, 371298), (152, 341985), (168, 309415), (190, 273588), (210, 247532), (228, 227990), (266, 195420), (280, 185649), (285, 182392), (380, 136794), (399, 130280), (420, 123766), (456, 113995), (532, 97710), (570, 91196), (665, 78168), (760, 68397), (798, 65140), (840, 61883), (1064, 48855), (1140, 45598), (1330, 39084), (1596, 32570), (1995, 26056), (2280, 22799), (2660, 19542), (3192, 16285), (3257, 15960), (3990, 13028), (5320, 9771), (6514, 7980)]