15418360

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:232

約数の個数: 64

約数和(自身を含む): 36158400

約数和(自身を除く): 20740040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 71, 89, 122, 142, 178, 244, 284, 305, 355, 356, 445, 488, 568, 610, 710, 712, 890, 1220, 1420, 1780, 2440, 2840, 3560, 4331, 5429, 6319, 8662, 10858, 12638, 17324, 21655, 21716, 25276, 27145, 31595, 34648, 43310, 43432, 50552, 54290, 63190, 86620, 108580, 126380, 173240, 217160, 252760, 385459, 770918, 1541836, 1927295, 3083672, 3854590, 7709180, 15418360]

約数ペア:

[(1, 15418360), (2, 7709180), (4, 3854590), (5, 3083672), (8, 1927295), (10, 1541836), (20, 770918), (40, 385459), (61, 252760), (71, 217160), (89, 173240), (122, 126380), (142, 108580), (178, 86620), (244, 63190), (284, 54290), (305, 50552), (355, 43432), (356, 43310), (445, 34648), (488, 31595), (568, 27145), (610, 25276), (710, 21716), (712, 21655), (890, 17324), (1220, 12638), (1420, 10858), (1780, 8662), (2440, 6319), (2840, 5429), (3560, 4331)]