81234972

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{181}}^1$

素因数の和:348

約数の個数: 144

約数和(自身を含む): 255982272

約数和(自身を除く): 174747300

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 52, 63, 78, 84, 91, 117, 126, 137, 156, 181, 182, 234, 252, 273, 274, 362, 364, 411, 468, 543, 546, 548, 724, 819, 822, 959, 1086, 1092, 1233, 1267, 1629, 1638, 1644, 1781, 1918, 2172, 2353, 2466, 2534, 2877, 3258, 3276, 3562, 3801, 3836, 4706, 4932, 5068, 5343, 5754, 6516, 7059, 7124, 7602, 8631, 9412, 10686, 11403, 11508, 12467, 14118, 15204, 16029, 16471, 17262, 21177, 21372, 22806, 24797, 24934, 28236, 32058, 32942, 34524, 37401, 42354, 45612, 49413, 49594, 49868, 64116, 65884, 74391, 74802, 84708, 98826, 99188, 112203, 148239, 148782, 149604, 173579, 197652, 223173, 224406, 296478, 297564, 322361, 347158, 446346, 448812, 520737, 592956, 644722, 694316, 892692, 967083, 1041474, 1289444, 1562211, 1934166, 2082948, 2256527, 2901249, 3124422, 3868332, 4513054, 5802498, 6248844, 6769581, 9026108, 11604996, 13539162, 20308743, 27078324, 40617486, 81234972]

約数ペア:

[(1, 81234972), (2, 40617486), (3, 27078324), (4, 20308743), (6, 13539162), (7, 11604996), (9, 9026108), (12, 6769581), (13, 6248844), (14, 5802498), (18, 4513054), (21, 3868332), (26, 3124422), (28, 2901249), (36, 2256527), (39, 2082948), (42, 1934166), (52, 1562211), (63, 1289444), (78, 1041474), (84, 967083), (91, 892692), (117, 694316), (126, 644722), (137, 592956), (156, 520737), (181, 448812), (182, 446346), (234, 347158), (252, 322361), (273, 297564), (274, 296478), (362, 224406), (364, 223173), (411, 197652), (468, 173579), (543, 149604), (546, 148782), (548, 148239), (724, 112203), (819, 99188), (822, 98826), (959, 84708), (1086, 74802), (1092, 74391), (1233, 65884), (1267, 64116), (1629, 49868), (1638, 49594), (1644, 49413), (1781, 45612), (1918, 42354), (2172, 37401), (2353, 34524), (2466, 32942), (2534, 32058), (2877, 28236), (3258, 24934), (3276, 24797), (3562, 22806), (3801, 21372), (3836, 21177), (4706, 17262), (4932, 16471), (5068, 16029), (5343, 15204), (5754, 14118), (6516, 12467), (7059, 11508), (7124, 11403), (7602, 10686), (8631, 9412)]