19893735

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:229

約数の個数: 64

約数和(自身を含む): 38016000

約数和(自身を除く): 18122265

約数列:

[1, 3, 5, 9, 15, 23, 27, 43, 45, 69, 115, 129, 135, 149, 207, 215, 345, 387, 447, 621, 645, 745, 989, 1035, 1161, 1341, 1935, 2235, 2967, 3105, 3427, 4023, 4945, 5805, 6407, 6705, 8901, 10281, 14835, 17135, 19221, 20115, 26703, 30843, 32035, 44505, 51405, 57663, 92529, 96105, 133515, 147361, 154215, 172989, 288315, 442083, 462645, 736805, 864945, 1326249, 2210415, 3978747, 6631245, 19893735]

約数ペア:

[(1, 19893735), (3, 6631245), (5, 3978747), (9, 2210415), (15, 1326249), (23, 864945), (27, 736805), (43, 462645), (45, 442083), (69, 288315), (115, 172989), (129, 154215), (135, 147361), (149, 133515), (207, 96105), (215, 92529), (345, 57663), (387, 51405), (447, 44505), (621, 32035), (645, 30843), (745, 26703), (989, 20115), (1035, 19221), (1161, 17135), (1341, 14835), (1935, 10281), (2235, 8901), (2967, 6705), (3105, 6407), (3427, 5805), (4023, 4945)]