19915884

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{359}}^1$

素因数の和:459

約数の個数: 72

約数和(自身を含む): 53464320

約数和(自身を除く): 33548436

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 67, 69, 92, 134, 138, 201, 207, 268, 276, 359, 402, 414, 603, 718, 804, 828, 1077, 1206, 1436, 1541, 2154, 2412, 3082, 3231, 4308, 4623, 6164, 6462, 8257, 9246, 12924, 13869, 16514, 18492, 24053, 24771, 27738, 33028, 48106, 49542, 55476, 72159, 74313, 96212, 99084, 144318, 148626, 216477, 288636, 297252, 432954, 553219, 865908, 1106438, 1659657, 2212876, 3319314, 4978971, 6638628, 9957942, 19915884]

約数ペア:

[(1, 19915884), (2, 9957942), (3, 6638628), (4, 4978971), (6, 3319314), (9, 2212876), (12, 1659657), (18, 1106438), (23, 865908), (36, 553219), (46, 432954), (67, 297252), (69, 288636), (92, 216477), (134, 148626), (138, 144318), (201, 99084), (207, 96212), (268, 74313), (276, 72159), (359, 55476), (402, 49542), (414, 48106), (603, 33028), (718, 27738), (804, 24771), (828, 24053), (1077, 18492), (1206, 16514), (1436, 13869), (1541, 12924), (2154, 9246), (2412, 8257), (3082, 6462), (3231, 6164), (4308, 4623)]