21221805904

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{409}}^1\times {\mathrm{619}}^1$

素因数の和:1093

約数の個数: 120

約数和(自身を含む): 46146451200

約数和(自身を除く): 24924645296

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 169, 208, 248, 338, 403, 409, 496, 619, 676, 806, 818, 1238, 1352, 1612, 1636, 2476, 2704, 3224, 3272, 4952, 5239, 5317, 6448, 6544, 8047, 9904, 10478, 10634, 12679, 16094, 19189, 20956, 21268, 25358, 32188, 38378, 41912, 42536, 50716, 64376, 69121, 76756, 83824, 85072, 101432, 104611, 128752, 138242, 153512, 164827, 202864, 209222, 249457, 253171, 276484, 307024, 329654, 418444, 498914, 506342, 552968, 659308, 836888, 997828, 1012684, 1105936, 1318616, 1673776, 1995656, 2025368, 2142751, 2637232, 3242941, 3291223, 3991312, 4050736, 4285502, 6485882, 6582446, 7848301, 8571004, 12971764, 13164892, 15696602, 17142008, 25943528, 26329784, 31393204, 34284016, 42785899, 51887056, 52659568, 62786408, 85571798, 102027913, 125572816, 171143596, 204055826, 342287192, 408111652, 684574384, 816223304, 1326362869, 1632446608, 2652725738, 5305451476, 10610902952, 21221805904]

約数ペア:

[(1, 21221805904), (2, 10610902952), (4, 5305451476), (8, 2652725738), (13, 1632446608), (16, 1326362869), (26, 816223304), (31, 684574384), (52, 408111652), (62, 342287192), (104, 204055826), (124, 171143596), (169, 125572816), (208, 102027913), (248, 85571798), (338, 62786408), (403, 52659568), (409, 51887056), (496, 42785899), (619, 34284016), (676, 31393204), (806, 26329784), (818, 25943528), (1238, 17142008), (1352, 15696602), (1612, 13164892), (1636, 12971764), (2476, 8571004), (2704, 7848301), (3224, 6582446), (3272, 6485882), (4952, 4285502), (5239, 4050736), (5317, 3991312), (6448, 3291223), (6544, 3242941), (8047, 2637232), (9904, 2142751), (10478, 2025368), (10634, 1995656), (12679, 1673776), (16094, 1318616), (19189, 1105936), (20956, 1012684), (21268, 997828), (25358, 836888), (32188, 659308), (38378, 552968), (41912, 506342), (42536, 498914), (50716, 418444), (64376, 329654), (69121, 307024), (76756, 276484), (83824, 253171), (85072, 249457), (101432, 209222), (104611, 202864), (128752, 164827), (138242, 153512)]