400438320

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{31481}}^1$

素因数の和:31550

約数の個数: 80

約数和(自身を含む): 1264820832

約数和(自身を除く): 864382512

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 53, 60, 80, 106, 120, 159, 212, 240, 265, 318, 424, 530, 636, 795, 848, 1060, 1272, 1590, 2120, 2544, 3180, 4240, 6360, 12720, 31481, 62962, 94443, 125924, 157405, 188886, 251848, 314810, 377772, 472215, 503696, 629620, 755544, 944430, 1259240, 1511088, 1668493, 1888860, 2518480, 3336986, 3777720, 5005479, 6673972, 7555440, 8342465, 10010958, 13347944, 16684930, 20021916, 25027395, 26695888, 33369860, 40043832, 50054790, 66739720, 80087664, 100109580, 133479440, 200219160, 400438320]

約数ペア:

[(1, 400438320), (2, 200219160), (3, 133479440), (4, 100109580), (5, 80087664), (6, 66739720), (8, 50054790), (10, 40043832), (12, 33369860), (15, 26695888), (16, 25027395), (20, 20021916), (24, 16684930), (30, 13347944), (40, 10010958), (48, 8342465), (53, 7555440), (60, 6673972), (80, 5005479), (106, 3777720), (120, 3336986), (159, 2518480), (212, 1888860), (240, 1668493), (265, 1511088), (318, 1259240), (424, 944430), (530, 755544), (636, 629620), (795, 503696), (848, 472215), (1060, 377772), (1272, 314810), (1590, 251848), (2120, 188886), (2544, 157405), (3180, 125924), (4240, 94443), (6360, 62962), (12720, 31481)]