18198908

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{173}}^1$

素因数の和:231

約数の個数: 72

約数和(自身を含む): 41879712

約数和(自身を除く): 23680804

約数列:

[1, 2, 4, 7, 13, 14, 17, 26, 28, 34, 52, 68, 91, 119, 173, 182, 221, 238, 289, 346, 364, 442, 476, 578, 692, 884, 1156, 1211, 1547, 2023, 2249, 2422, 2941, 3094, 3757, 4046, 4498, 4844, 5882, 6188, 7514, 8092, 8996, 11764, 15028, 15743, 20587, 26299, 31486, 38233, 41174, 49997, 52598, 62972, 76466, 82348, 99994, 105196, 152932, 199988, 267631, 349979, 535262, 649961, 699958, 1070524, 1299922, 1399916, 2599844, 4549727, 9099454, 18198908]

約数ペア:

[(1, 18198908), (2, 9099454), (4, 4549727), (7, 2599844), (13, 1399916), (14, 1299922), (17, 1070524), (26, 699958), (28, 649961), (34, 535262), (52, 349979), (68, 267631), (91, 199988), (119, 152932), (173, 105196), (182, 99994), (221, 82348), (238, 76466), (289, 62972), (346, 52598), (364, 49997), (442, 41174), (476, 38233), (578, 31486), (692, 26299), (884, 20587), (1156, 15743), (1211, 15028), (1547, 11764), (2023, 8996), (2249, 8092), (2422, 7514), (2941, 6188), (3094, 5882), (3757, 4844), (4046, 4498)]