27978040

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{271}}^1$

素因数の和:400

約数の個数: 64

約数和(自身を含む): 66096000

約数和(自身を除く): 38117960

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 89, 116, 145, 178, 232, 271, 290, 356, 445, 542, 580, 712, 890, 1084, 1160, 1355, 1780, 2168, 2581, 2710, 3560, 5162, 5420, 7859, 10324, 10840, 12905, 15718, 20648, 24119, 25810, 31436, 39295, 48238, 51620, 62872, 78590, 96476, 103240, 120595, 157180, 192952, 241190, 314360, 482380, 699451, 964760, 1398902, 2797804, 3497255, 5595608, 6994510, 13989020, 27978040]

約数ペア:

[(1, 27978040), (2, 13989020), (4, 6994510), (5, 5595608), (8, 3497255), (10, 2797804), (20, 1398902), (29, 964760), (40, 699451), (58, 482380), (89, 314360), (116, 241190), (145, 192952), (178, 157180), (232, 120595), (271, 103240), (290, 96476), (356, 78590), (445, 62872), (542, 51620), (580, 48238), (712, 39295), (890, 31436), (1084, 25810), (1160, 24119), (1355, 20648), (1780, 15718), (2168, 12905), (2581, 10840), (2710, 10324), (3560, 7859), (5162, 5420)]