21302595

素因数分解:

$3^5\times 5^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 38918880

約数和(自身を除く): 17616285

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 89, 135, 197, 243, 267, 405, 445, 591, 801, 985, 1215, 1335, 1773, 2403, 2955, 4005, 5319, 7209, 8865, 12015, 15957, 17533, 21627, 26595, 36045, 47871, 52599, 79785, 87665, 108135, 157797, 239355, 262995, 473391, 788985, 1420173, 2366955, 4260519, 7100865, 21302595]

約数ペア:

[(1, 21302595), (3, 7100865), (5, 4260519), (9, 2366955), (15, 1420173), (27, 788985), (45, 473391), (81, 262995), (89, 239355), (135, 157797), (197, 108135), (243, 87665), (267, 79785), (405, 52599), (445, 47871), (591, 36045), (801, 26595), (985, 21627), (1215, 17533), (1335, 15957), (1773, 12015), (2403, 8865), (2955, 7209), (4005, 5319)]