19715688

素因数分解:

$2^3\times 3^2\times {\mathrm{61}}^1\times {\mathrm{67}}^2$

素因数の和:207

約数の個数: 72

約数和(自身を含む): 55094130

約数和(自身を除く): 35378442

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 61, 67, 72, 122, 134, 183, 201, 244, 268, 366, 402, 488, 536, 549, 603, 732, 804, 1098, 1206, 1464, 1608, 2196, 2412, 4087, 4392, 4489, 4824, 8174, 8978, 12261, 13467, 16348, 17956, 24522, 26934, 32696, 35912, 36783, 40401, 49044, 53868, 73566, 80802, 98088, 107736, 147132, 161604, 273829, 294264, 323208, 547658, 821487, 1095316, 1642974, 2190632, 2464461, 3285948, 4928922, 6571896, 9857844, 19715688]

約数ペア:

[(1, 19715688), (2, 9857844), (3, 6571896), (4, 4928922), (6, 3285948), (8, 2464461), (9, 2190632), (12, 1642974), (18, 1095316), (24, 821487), (36, 547658), (61, 323208), (67, 294264), (72, 273829), (122, 161604), (134, 147132), (183, 107736), (201, 98088), (244, 80802), (268, 73566), (366, 53868), (402, 49044), (488, 40401), (536, 36783), (549, 35912), (603, 32696), (732, 26934), (804, 24522), (1098, 17956), (1206, 16348), (1464, 13467), (1608, 12261), (2196, 8978), (2412, 8174), (4087, 4824), (4392, 4489)]