18785680

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{727}}^1$

素因数の和:776

約数の個数: 80

約数和(自身を含む): 48746880

約数和(自身を除く): 29961200

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 34, 38, 40, 68, 76, 80, 85, 95, 136, 152, 170, 190, 272, 304, 323, 340, 380, 646, 680, 727, 760, 1292, 1360, 1454, 1520, 1615, 2584, 2908, 3230, 3635, 5168, 5816, 6460, 7270, 11632, 12359, 12920, 13813, 14540, 24718, 25840, 27626, 29080, 49436, 55252, 58160, 61795, 69065, 98872, 110504, 123590, 138130, 197744, 221008, 234821, 247180, 276260, 469642, 494360, 552520, 939284, 988720, 1105040, 1174105, 1878568, 2348210, 3757136, 4696420, 9392840, 18785680]

約数ペア:

[(1, 18785680), (2, 9392840), (4, 4696420), (5, 3757136), (8, 2348210), (10, 1878568), (16, 1174105), (17, 1105040), (19, 988720), (20, 939284), (34, 552520), (38, 494360), (40, 469642), (68, 276260), (76, 247180), (80, 234821), (85, 221008), (95, 197744), (136, 138130), (152, 123590), (170, 110504), (190, 98872), (272, 69065), (304, 61795), (323, 58160), (340, 55252), (380, 49436), (646, 29080), (680, 27626), (727, 25840), (760, 24718), (1292, 14540), (1360, 13813), (1454, 12920), (1520, 12359), (1615, 11632), (2584, 7270), (2908, 6460), (3230, 5816), (3635, 5168)]