18741529947

素因数分解:

$3^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{557}}^1\times {\mathrm{1721}}^1$

素因数の和:2321

約数の個数: 64

約数和(自身を含む): 30748032000

約数和(自身を除く): 12006502053

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 343, 399, 557, 931, 1029, 1671, 1721, 2793, 3899, 5163, 6517, 10583, 11697, 12047, 19551, 27293, 31749, 32699, 36141, 74081, 81879, 84329, 98097, 191051, 222243, 228893, 252987, 518567, 573153, 590303, 686679, 958597, 1555701, 1602251, 1770909, 2875791, 3629969, 4806753, 6710179, 10889907, 11215757, 18213343, 20130537, 33647271, 46971253, 54640029, 127493401, 140913759, 328798771, 382480203, 892453807, 986396313, 2677361421, 6247176649, 18741529947]

約数ペア:

[(1, 18741529947), (3, 6247176649), (7, 2677361421), (19, 986396313), (21, 892453807), (49, 382480203), (57, 328798771), (133, 140913759), (147, 127493401), (343, 54640029), (399, 46971253), (557, 33647271), (931, 20130537), (1029, 18213343), (1671, 11215757), (1721, 10889907), (2793, 6710179), (3899, 4806753), (5163, 3629969), (6517, 2875791), (10583, 1770909), (11697, 1602251), (12047, 1555701), (19551, 958597), (27293, 686679), (31749, 590303), (32699, 573153), (36141, 518567), (74081, 252987), (81879, 228893), (84329, 222243), (98097, 191051)]