20019825

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1$

素因数の和:268

約数の個数: 96

約数和(自身を含む): 44441600

約数和(自身を除く): 24421775

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 25, 27, 35, 45, 57, 63, 75, 95, 105, 133, 135, 171, 175, 189, 223, 225, 285, 315, 399, 475, 513, 525, 665, 669, 675, 855, 945, 1115, 1197, 1425, 1561, 1575, 1995, 2007, 2565, 3325, 3345, 3591, 4237, 4275, 4683, 4725, 5575, 5985, 6021, 7805, 9975, 10035, 12711, 12825, 14049, 16725, 17955, 21185, 23415, 29659, 29925, 30105, 38133, 39025, 42147, 50175, 63555, 70245, 88977, 89775, 105925, 114399, 117075, 148295, 150525, 190665, 210735, 266931, 317775, 351225, 444885, 571995, 741475, 800793, 953325, 1053675, 1334655, 2224425, 2859975, 4003965, 6673275, 20019825]

約数ペア:

[(1, 20019825), (3, 6673275), (5, 4003965), (7, 2859975), (9, 2224425), (15, 1334655), (19, 1053675), (21, 953325), (25, 800793), (27, 741475), (35, 571995), (45, 444885), (57, 351225), (63, 317775), (75, 266931), (95, 210735), (105, 190665), (133, 150525), (135, 148295), (171, 117075), (175, 114399), (189, 105925), (223, 89775), (225, 88977), (285, 70245), (315, 63555), (399, 50175), (475, 42147), (513, 39025), (525, 38133), (665, 30105), (669, 29925), (675, 29659), (855, 23415), (945, 21185), (1115, 17955), (1197, 16725), (1425, 14049), (1561, 12825), (1575, 12711), (1995, 10035), (2007, 9975), (2565, 7805), (3325, 6021), (3345, 5985), (3591, 5575), (4237, 4725), (4275, 4683)]