647819928

素因数分解:

$2^3\times 3^2\times 7^1\times {\mathrm{643}}^1\times {\mathrm{1999}}^1$

素因数の和:2661

約数の個数: 96

約数和(自身を含む): 2009280000

約数和(自身を除く): 1361460072

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 28, 36, 42, 56, 63, 72, 84, 126, 168, 252, 504, 643, 1286, 1929, 1999, 2572, 3858, 3998, 4501, 5144, 5787, 5997, 7716, 7996, 9002, 11574, 11994, 13503, 13993, 15432, 15992, 17991, 18004, 23148, 23988, 27006, 27986, 35982, 36008, 40509, 41979, 46296, 47976, 54012, 55972, 71964, 81018, 83958, 108024, 111944, 125937, 143928, 162036, 167916, 251874, 324072, 335832, 503748, 1007496, 1285357, 2570714, 3856071, 5141428, 7712142, 8997499, 10282856, 11568213, 15424284, 17994998, 23136426, 26992497, 30848568, 35989996, 46272852, 53984994, 71979992, 80977491, 92545704, 107969988, 161954982, 215939976, 323909964, 647819928]

約数ペア:

[(1, 647819928), (2, 323909964), (3, 215939976), (4, 161954982), (6, 107969988), (7, 92545704), (8, 80977491), (9, 71979992), (12, 53984994), (14, 46272852), (18, 35989996), (21, 30848568), (24, 26992497), (28, 23136426), (36, 17994998), (42, 15424284), (56, 11568213), (63, 10282856), (72, 8997499), (84, 7712142), (126, 5141428), (168, 3856071), (252, 2570714), (504, 1285357), (643, 1007496), (1286, 503748), (1929, 335832), (1999, 324072), (2572, 251874), (3858, 167916), (3998, 162036), (4501, 143928), (5144, 125937), (5787, 111944), (5997, 108024), (7716, 83958), (7996, 81018), (9002, 71964), (11574, 55972), (11994, 54012), (13503, 47976), (13993, 46296), (15432, 41979), (15992, 40509), (17991, 36008), (18004, 35982), (23148, 27986), (23988, 27006)]