199368520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1187}}^1$

素因数の和:1247

約数の個数: 128

約数和(自身を含む): 538876800

約数和(自身を除く): 339508280

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 19, 20, 26, 34, 38, 40, 52, 65, 68, 76, 85, 95, 104, 130, 136, 152, 170, 190, 221, 247, 260, 323, 340, 380, 442, 494, 520, 646, 680, 760, 884, 988, 1105, 1187, 1235, 1292, 1615, 1768, 1976, 2210, 2374, 2470, 2584, 3230, 4199, 4420, 4748, 4940, 5935, 6460, 8398, 8840, 9496, 9880, 11870, 12920, 15431, 16796, 20179, 20995, 22553, 23740, 30862, 33592, 40358, 41990, 45106, 47480, 61724, 77155, 80716, 83980, 90212, 100895, 112765, 123448, 154310, 161432, 167960, 180424, 201790, 225530, 262327, 293189, 308620, 383401, 403580, 451060, 524654, 586378, 617240, 766802, 807160, 902120, 1049308, 1172756, 1311635, 1465945, 1533604, 1917005, 2098616, 2345512, 2623270, 2931890, 3067208, 3834010, 4984213, 5246540, 5863780, 7668020, 9968426, 10493080, 11727560, 15336040, 19936852, 24921065, 39873704, 49842130, 99684260, 199368520]

約数ペア:

[(1, 199368520), (2, 99684260), (4, 49842130), (5, 39873704), (8, 24921065), (10, 19936852), (13, 15336040), (17, 11727560), (19, 10493080), (20, 9968426), (26, 7668020), (34, 5863780), (38, 5246540), (40, 4984213), (52, 3834010), (65, 3067208), (68, 2931890), (76, 2623270), (85, 2345512), (95, 2098616), (104, 1917005), (130, 1533604), (136, 1465945), (152, 1311635), (170, 1172756), (190, 1049308), (221, 902120), (247, 807160), (260, 766802), (323, 617240), (340, 586378), (380, 524654), (442, 451060), (494, 403580), (520, 383401), (646, 308620), (680, 293189), (760, 262327), (884, 225530), (988, 201790), (1105, 180424), (1187, 167960), (1235, 161432), (1292, 154310), (1615, 123448), (1768, 112765), (1976, 100895), (2210, 90212), (2374, 83980), (2470, 80716), (2584, 77155), (3230, 61724), (4199, 47480), (4420, 45106), (4748, 41990), (4940, 40358), (5935, 33592), (6460, 30862), (8398, 23740), (8840, 22553), (9496, 20995), (9880, 20179), (11870, 16796), (12920, 15431)]