42130420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:277

約数の個数: 72

約数和(自身を含む): 97014456

約数和(自身を除く): 54884036

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 37, 68, 74, 85, 148, 170, 185, 197, 289, 340, 370, 394, 578, 629, 740, 788, 985, 1156, 1258, 1445, 1970, 2516, 2890, 3145, 3349, 3940, 5780, 6290, 6698, 7289, 10693, 12580, 13396, 14578, 16745, 21386, 29156, 33490, 36445, 42772, 53465, 56933, 66980, 72890, 106930, 113866, 123913, 145780, 213860, 227732, 247826, 284665, 495652, 569330, 619565, 1138660, 1239130, 2106521, 2478260, 4213042, 8426084, 10532605, 21065210, 42130420]

約数ペア:

[(1, 42130420), (2, 21065210), (4, 10532605), (5, 8426084), (10, 4213042), (17, 2478260), (20, 2106521), (34, 1239130), (37, 1138660), (68, 619565), (74, 569330), (85, 495652), (148, 284665), (170, 247826), (185, 227732), (197, 213860), (289, 145780), (340, 123913), (370, 113866), (394, 106930), (578, 72890), (629, 66980), (740, 56933), (788, 53465), (985, 42772), (1156, 36445), (1258, 33490), (1445, 29156), (1970, 21386), (2516, 16745), (2890, 14578), (3145, 13396), (3349, 12580), (3940, 10693), (5780, 7289), (6290, 6698)]