217740280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{1973}}^1$

素因数の和:2104

約数の個数: 64

約数和(自身を含む): 511660800

約数和(自身を除く): 293920520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 89, 124, 155, 178, 248, 310, 356, 445, 620, 712, 890, 1240, 1780, 1973, 2759, 3560, 3946, 5518, 7892, 9865, 11036, 13795, 15784, 19730, 22072, 27590, 39460, 55180, 61163, 78920, 110360, 122326, 175597, 244652, 305815, 351194, 489304, 611630, 702388, 877985, 1223260, 1404776, 1755970, 2446520, 3511940, 5443507, 7023880, 10887014, 21774028, 27217535, 43548056, 54435070, 108870140, 217740280]

約数ペア:

[(1, 217740280), (2, 108870140), (4, 54435070), (5, 43548056), (8, 27217535), (10, 21774028), (20, 10887014), (31, 7023880), (40, 5443507), (62, 3511940), (89, 2446520), (124, 1755970), (155, 1404776), (178, 1223260), (248, 877985), (310, 702388), (356, 611630), (445, 489304), (620, 351194), (712, 305815), (890, 244652), (1240, 175597), (1780, 122326), (1973, 110360), (2759, 78920), (3560, 61163), (3946, 55180), (5518, 39460), (7892, 27590), (9865, 22072), (11036, 19730), (13795, 15784)]