20470788

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:154

約数の個数: 144

約数和(自身を含む): 61641216

約数和(自身を除く): 41170428

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 17, 18, 26, 31, 34, 36, 39, 51, 52, 62, 68, 78, 83, 93, 102, 117, 124, 153, 156, 166, 186, 204, 221, 234, 249, 279, 306, 332, 372, 403, 442, 468, 498, 527, 558, 612, 663, 747, 806, 884, 996, 1054, 1079, 1116, 1209, 1326, 1411, 1494, 1581, 1612, 1989, 2108, 2158, 2418, 2573, 2652, 2822, 2988, 3162, 3237, 3627, 3978, 4233, 4316, 4743, 4836, 5146, 5644, 6324, 6474, 6851, 7254, 7719, 7956, 8466, 9486, 9711, 10292, 12699, 12948, 13702, 14508, 15438, 16932, 18343, 18972, 19422, 20553, 23157, 25398, 27404, 30876, 33449, 36686, 38844, 41106, 43741, 46314, 50796, 55029, 61659, 66898, 73372, 82212, 87482, 92628, 100347, 110058, 123318, 131223, 133796, 165087, 174964, 200694, 220116, 246636, 262446, 301041, 330174, 393669, 401388, 524892, 568633, 602082, 660348, 787338, 1137266, 1204164, 1574676, 1705899, 2274532, 3411798, 5117697, 6823596, 10235394, 20470788]

約数ペア:

[(1, 20470788), (2, 10235394), (3, 6823596), (4, 5117697), (6, 3411798), (9, 2274532), (12, 1705899), (13, 1574676), (17, 1204164), (18, 1137266), (26, 787338), (31, 660348), (34, 602082), (36, 568633), (39, 524892), (51, 401388), (52, 393669), (62, 330174), (68, 301041), (78, 262446), (83, 246636), (93, 220116), (102, 200694), (117, 174964), (124, 165087), (153, 133796), (156, 131223), (166, 123318), (186, 110058), (204, 100347), (221, 92628), (234, 87482), (249, 82212), (279, 73372), (306, 66898), (332, 61659), (372, 55029), (403, 50796), (442, 46314), (468, 43741), (498, 41106), (527, 38844), (558, 36686), (612, 33449), (663, 30876), (747, 27404), (806, 25398), (884, 23157), (996, 20553), (1054, 19422), (1079, 18972), (1116, 18343), (1209, 16932), (1326, 15438), (1411, 14508), (1494, 13702), (1581, 12948), (1612, 12699), (1989, 10292), (2108, 9711), (2158, 9486), (2418, 8466), (2573, 7956), (2652, 7719), (2822, 7254), (2988, 6851), (3162, 6474), (3237, 6324), (3627, 5644), (3978, 5146), (4233, 4836), (4316, 4743)]