20800728

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:409

約数の個数: 96

約数和(自身を含む): 61719840

約数和(自身を除く): 40919112

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 71, 72, 78, 104, 117, 142, 156, 213, 234, 284, 312, 313, 426, 468, 568, 626, 639, 852, 923, 936, 939, 1252, 1278, 1704, 1846, 1878, 2504, 2556, 2769, 2817, 3692, 3756, 4069, 5112, 5538, 5634, 7384, 7512, 8138, 8307, 11076, 11268, 12207, 16276, 16614, 22152, 22223, 22536, 24414, 32552, 33228, 36621, 44446, 48828, 66456, 66669, 73242, 88892, 97656, 133338, 146484, 177784, 200007, 266676, 288899, 292968, 400014, 533352, 577798, 800028, 866697, 1155596, 1600056, 1733394, 2311192, 2600091, 3466788, 5200182, 6933576, 10400364, 20800728]

約数ペア:

[(1, 20800728), (2, 10400364), (3, 6933576), (4, 5200182), (6, 3466788), (8, 2600091), (9, 2311192), (12, 1733394), (13, 1600056), (18, 1155596), (24, 866697), (26, 800028), (36, 577798), (39, 533352), (52, 400014), (71, 292968), (72, 288899), (78, 266676), (104, 200007), (117, 177784), (142, 146484), (156, 133338), (213, 97656), (234, 88892), (284, 73242), (312, 66669), (313, 66456), (426, 48828), (468, 44446), (568, 36621), (626, 33228), (639, 32552), (852, 24414), (923, 22536), (936, 22223), (939, 22152), (1252, 16614), (1278, 16276), (1704, 12207), (1846, 11268), (1878, 11076), (2504, 8307), (2556, 8138), (2769, 7512), (2817, 7384), (3692, 5634), (3756, 5538), (4069, 5112)]