2018890420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{8123}}^1$

素因数の和:8209

約数の個数: 72

約数和(自身を含む): 4609037664

約数和(自身を除く): 2590147244

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 43, 68, 85, 86, 170, 172, 215, 289, 340, 430, 578, 731, 860, 1156, 1445, 1462, 2890, 2924, 3655, 5780, 7310, 8123, 12427, 14620, 16246, 24854, 32492, 40615, 49708, 62135, 81230, 124270, 138091, 162460, 248540, 276182, 349289, 552364, 690455, 698578, 1380910, 1397156, 1746445, 2347547, 2761820, 3492890, 4695094, 5937913, 6985780, 9390188, 11737735, 11875826, 23475470, 23751652, 29689565, 46950940, 59379130, 100944521, 118758260, 201889042, 403778084, 504722605, 1009445210, 2018890420]

約数ペア:

[(1, 2018890420), (2, 1009445210), (4, 504722605), (5, 403778084), (10, 201889042), (17, 118758260), (20, 100944521), (34, 59379130), (43, 46950940), (68, 29689565), (85, 23751652), (86, 23475470), (170, 11875826), (172, 11737735), (215, 9390188), (289, 6985780), (340, 5937913), (430, 4695094), (578, 3492890), (731, 2761820), (860, 2347547), (1156, 1746445), (1445, 1397156), (1462, 1380910), (2890, 698578), (2924, 690455), (3655, 552364), (5780, 349289), (7310, 276182), (8123, 248540), (12427, 162460), (14620, 138091), (16246, 124270), (24854, 81230), (32492, 62135), (40615, 49708)]