21409287704

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{649081}}^1$

素因数の和:649144

約数の個数: 64

約数和(自身を含む): 49849497600

約数和(自身を除く): 28440209896

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 31, 38, 56, 62, 76, 124, 133, 152, 217, 248, 266, 434, 532, 589, 868, 1064, 1178, 1736, 2356, 4123, 4712, 8246, 16492, 32984, 649081, 1298162, 2596324, 4543567, 5192648, 9087134, 12332539, 18174268, 20121511, 24665078, 36348536, 40243022, 49330156, 80486044, 86327773, 98660312, 140850577, 160972088, 172655546, 281701154, 345311092, 382308709, 563402308, 690622184, 764617418, 1126804616, 1529234836, 2676160963, 3058469672, 5352321926, 10704643852, 21409287704]

約数ペア:

[(1, 21409287704), (2, 10704643852), (4, 5352321926), (7, 3058469672), (8, 2676160963), (14, 1529234836), (19, 1126804616), (28, 764617418), (31, 690622184), (38, 563402308), (56, 382308709), (62, 345311092), (76, 281701154), (124, 172655546), (133, 160972088), (152, 140850577), (217, 98660312), (248, 86327773), (266, 80486044), (434, 49330156), (532, 40243022), (589, 36348536), (868, 24665078), (1064, 20121511), (1178, 18174268), (1736, 12332539), (2356, 9087134), (4123, 5192648), (4712, 4543567), (8246, 2596324), (16492, 1298162), (32984, 649081)]