71791020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{227}}^1\times {\mathrm{251}}^1$

素因数の和:500

約数の個数: 144

約数和(自身を含む): 250967808

約数和(自身を除く): 179176788

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 227, 251, 252, 315, 420, 454, 502, 630, 681, 753, 908, 1004, 1135, 1255, 1260, 1362, 1506, 1589, 1757, 2043, 2259, 2270, 2510, 2724, 3012, 3178, 3405, 3514, 3765, 4086, 4518, 4540, 4767, 5020, 5271, 6356, 6810, 7028, 7530, 7945, 8172, 8785, 9036, 9534, 10215, 10542, 11295, 13620, 14301, 15060, 15813, 15890, 17570, 19068, 20430, 21084, 22590, 23835, 26355, 28602, 31626, 31780, 35140, 40860, 45180, 47670, 52710, 56977, 57204, 63252, 71505, 79065, 95340, 105420, 113954, 143010, 158130, 170931, 227908, 284885, 286020, 316260, 341862, 398839, 512793, 569770, 683724, 797678, 854655, 1025586, 1139540, 1196517, 1595356, 1709310, 1994195, 2051172, 2393034, 2563965, 3418620, 3589551, 3988390, 4786068, 5127930, 5982585, 7179102, 7976780, 10255860, 11965170, 14358204, 17947755, 23930340, 35895510, 71791020]

約数ペア:

[(1, 71791020), (2, 35895510), (3, 23930340), (4, 17947755), (5, 14358204), (6, 11965170), (7, 10255860), (9, 7976780), (10, 7179102), (12, 5982585), (14, 5127930), (15, 4786068), (18, 3988390), (20, 3589551), (21, 3418620), (28, 2563965), (30, 2393034), (35, 2051172), (36, 1994195), (42, 1709310), (45, 1595356), (60, 1196517), (63, 1139540), (70, 1025586), (84, 854655), (90, 797678), (105, 683724), (126, 569770), (140, 512793), (180, 398839), (210, 341862), (227, 316260), (251, 286020), (252, 284885), (315, 227908), (420, 170931), (454, 158130), (502, 143010), (630, 113954), (681, 105420), (753, 95340), (908, 79065), (1004, 71505), (1135, 63252), (1255, 57204), (1260, 56977), (1362, 52710), (1506, 47670), (1589, 45180), (1757, 40860), (2043, 35140), (2259, 31780), (2270, 31626), (2510, 28602), (2724, 26355), (3012, 23835), (3178, 22590), (3405, 21084), (3514, 20430), (3765, 19068), (4086, 17570), (4518, 15890), (4540, 15813), (4767, 15060), (5020, 14301), (5271, 13620), (6356, 11295), (6810, 10542), (7028, 10215), (7530, 9534), (7945, 9036), (8172, 8785)]