721511928

素因数分解:

$2^3\times 3^3\times {\mathrm{19}}^3\times {\mathrm{487}}^1$

素因数の和:559

約数の個数: 128

約数和(自身を含む): 2119872000

約数和(自身を除く): 1398360072

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 19, 24, 27, 36, 38, 54, 57, 72, 76, 108, 114, 152, 171, 216, 228, 342, 361, 456, 487, 513, 684, 722, 974, 1026, 1083, 1368, 1444, 1461, 1948, 2052, 2166, 2888, 2922, 3249, 3896, 4104, 4332, 4383, 5844, 6498, 6859, 8664, 8766, 9253, 9747, 11688, 12996, 13149, 13718, 17532, 18506, 19494, 20577, 25992, 26298, 27436, 27759, 35064, 37012, 38988, 41154, 52596, 54872, 55518, 61731, 74024, 77976, 82308, 83277, 105192, 111036, 123462, 164616, 166554, 175807, 185193, 222072, 246924, 249831, 333108, 351614, 370386, 493848, 499662, 527421, 666216, 703228, 740772, 999324, 1054842, 1406456, 1481544, 1582263, 1998648, 2109684, 3164526, 3340333, 4219368, 4746789, 6329052, 6680666, 9493578, 10020999, 12658104, 13361332, 18987156, 20041998, 26722664, 30062997, 37974312, 40083996, 60125994, 80167992, 90188991, 120251988, 180377982, 240503976, 360755964, 721511928]

約数ペア:

[(1, 721511928), (2, 360755964), (3, 240503976), (4, 180377982), (6, 120251988), (8, 90188991), (9, 80167992), (12, 60125994), (18, 40083996), (19, 37974312), (24, 30062997), (27, 26722664), (36, 20041998), (38, 18987156), (54, 13361332), (57, 12658104), (72, 10020999), (76, 9493578), (108, 6680666), (114, 6329052), (152, 4746789), (171, 4219368), (216, 3340333), (228, 3164526), (342, 2109684), (361, 1998648), (456, 1582263), (487, 1481544), (513, 1406456), (684, 1054842), (722, 999324), (974, 740772), (1026, 703228), (1083, 666216), (1368, 527421), (1444, 499662), (1461, 493848), (1948, 370386), (2052, 351614), (2166, 333108), (2888, 249831), (2922, 246924), (3249, 222072), (3896, 185193), (4104, 175807), (4332, 166554), (4383, 164616), (5844, 123462), (6498, 111036), (6859, 105192), (8664, 83277), (8766, 82308), (9253, 77976), (9747, 74024), (11688, 61731), (12996, 55518), (13149, 54872), (13718, 52596), (17532, 41154), (18506, 38988), (19494, 37012), (20577, 35064), (25992, 27759), (26298, 27436)]