521211145

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:386

約数の個数: 64

約数和(自身を含む): 794949120

約数和(自身を除く): 273737975

約数列:

[1, 5, 7, 13, 35, 61, 65, 89, 91, 211, 305, 427, 445, 455, 623, 793, 1055, 1157, 1477, 2135, 2743, 3115, 3965, 5429, 5551, 5785, 7385, 8099, 12871, 13715, 18779, 19201, 27145, 27755, 38003, 40495, 64355, 70577, 90097, 93895, 96005, 131453, 167323, 190015, 244127, 352885, 450485, 494039, 657265, 836615, 1145519, 1171261, 1220635, 1708889, 2470195, 5727595, 5856305, 8018633, 8544445, 14891747, 40093165, 74458735, 104242229, 521211145]

約数ペア:

[(1, 521211145), (5, 104242229), (7, 74458735), (13, 40093165), (35, 14891747), (61, 8544445), (65, 8018633), (89, 5856305), (91, 5727595), (211, 2470195), (305, 1708889), (427, 1220635), (445, 1171261), (455, 1145519), (623, 836615), (793, 657265), (1055, 494039), (1157, 450485), (1477, 352885), (2135, 244127), (2743, 190015), (3115, 167323), (3965, 131453), (5429, 96005), (5551, 93895), (5785, 90097), (7385, 70577), (8099, 64355), (12871, 40495), (13715, 38003), (18779, 27755), (19201, 27145)]