20869758

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:199

約数の個数: 128

約数和(自身を含む): 59351040

約数和(自身を除く): 38481282

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 27, 31, 39, 42, 54, 62, 63, 78, 91, 93, 117, 126, 137, 182, 186, 189, 217, 234, 273, 274, 279, 351, 378, 403, 411, 434, 546, 558, 651, 702, 806, 819, 822, 837, 959, 1209, 1233, 1302, 1638, 1674, 1781, 1918, 1953, 2418, 2457, 2466, 2821, 2877, 3562, 3627, 3699, 3906, 4247, 4914, 5343, 5642, 5754, 5859, 7254, 7398, 8463, 8494, 8631, 10686, 10881, 11718, 12467, 12741, 16029, 16926, 17262, 21762, 24934, 25389, 25482, 25893, 29729, 32058, 37401, 38223, 48087, 50778, 51786, 55211, 59458, 74802, 76167, 76446, 89187, 96174, 110422, 112203, 114669, 152334, 165633, 178374, 224406, 229338, 267561, 331266, 336609, 386477, 496899, 535122, 673218, 772954, 802683, 993798, 1159431, 1490697, 1605366, 2318862, 2981394, 3478293, 6956586, 10434879, 20869758]

約数ペア:

[(1, 20869758), (2, 10434879), (3, 6956586), (6, 3478293), (7, 2981394), (9, 2318862), (13, 1605366), (14, 1490697), (18, 1159431), (21, 993798), (26, 802683), (27, 772954), (31, 673218), (39, 535122), (42, 496899), (54, 386477), (62, 336609), (63, 331266), (78, 267561), (91, 229338), (93, 224406), (117, 178374), (126, 165633), (137, 152334), (182, 114669), (186, 112203), (189, 110422), (217, 96174), (234, 89187), (273, 76446), (274, 76167), (279, 74802), (351, 59458), (378, 55211), (403, 51786), (411, 50778), (434, 48087), (546, 38223), (558, 37401), (651, 32058), (702, 29729), (806, 25893), (819, 25482), (822, 25389), (837, 24934), (959, 21762), (1209, 17262), (1233, 16926), (1302, 16029), (1638, 12741), (1674, 12467), (1781, 11718), (1918, 10881), (1953, 10686), (2418, 8631), (2457, 8494), (2466, 8463), (2821, 7398), (2877, 7254), (3562, 5859), (3627, 5754), (3699, 5642), (3906, 5343), (4247, 4914)]