28295325

素因数分解:

$3^4\times 5^2\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:268

約数の個数: 60

約数和(自身を含む): 53339220

約数和(自身を除く): 25043895

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 89, 135, 157, 225, 267, 405, 445, 471, 675, 785, 801, 1335, 1413, 2025, 2225, 2355, 2403, 3925, 4005, 4239, 6675, 7065, 7209, 11775, 12015, 12717, 13973, 20025, 21195, 35325, 36045, 41919, 60075, 63585, 69865, 105975, 125757, 180225, 209595, 317925, 349325, 377271, 628785, 1047975, 1131813, 1886355, 3143925, 5659065, 9431775, 28295325]

約数ペア:

[(1, 28295325), (3, 9431775), (5, 5659065), (9, 3143925), (15, 1886355), (25, 1131813), (27, 1047975), (45, 628785), (75, 377271), (81, 349325), (89, 317925), (135, 209595), (157, 180225), (225, 125757), (267, 105975), (405, 69865), (445, 63585), (471, 60075), (675, 41919), (785, 36045), (801, 35325), (1335, 21195), (1413, 20025), (2025, 13973), (2225, 12717), (2355, 12015), (2403, 11775), (3925, 7209), (4005, 7065), (4239, 6675)]