18902988

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^3\times {\mathrm{239}}^1$

素因数の和:288

約数の個数: 72

約数和(自身を含む): 51979200

約数和(自身を除く): 33076212

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 169, 234, 239, 338, 468, 478, 507, 676, 717, 956, 1014, 1434, 1521, 2028, 2151, 2197, 2868, 3042, 3107, 4302, 4394, 6084, 6214, 6591, 8604, 8788, 9321, 12428, 13182, 18642, 19773, 26364, 27963, 37284, 39546, 40391, 55926, 79092, 80782, 111852, 121173, 161564, 242346, 363519, 484692, 525083, 727038, 1050166, 1454076, 1575249, 2100332, 3150498, 4725747, 6300996, 9451494, 18902988]

約数ペア:

[(1, 18902988), (2, 9451494), (3, 6300996), (4, 4725747), (6, 3150498), (9, 2100332), (12, 1575249), (13, 1454076), (18, 1050166), (26, 727038), (36, 525083), (39, 484692), (52, 363519), (78, 242346), (117, 161564), (156, 121173), (169, 111852), (234, 80782), (239, 79092), (338, 55926), (468, 40391), (478, 39546), (507, 37284), (676, 27963), (717, 26364), (956, 19773), (1014, 18642), (1434, 13182), (1521, 12428), (2028, 9321), (2151, 8788), (2197, 8604), (2868, 6591), (3042, 6214), (3107, 6084), (4302, 4394)]