19970444

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1$

素因数の和:123

約数の個数: 96

約数和(自身を含む): 44452800

約数和(自身を除く): 24482356

約数列:

[1, 2, 4, 13, 17, 19, 26, 29, 34, 38, 41, 52, 58, 68, 76, 82, 116, 164, 221, 247, 323, 377, 442, 493, 494, 533, 551, 646, 697, 754, 779, 884, 986, 988, 1066, 1102, 1189, 1292, 1394, 1508, 1558, 1972, 2132, 2204, 2378, 2788, 3116, 4199, 4756, 6409, 7163, 8398, 9061, 9367, 10127, 12818, 13243, 14326, 15457, 16796, 18122, 18734, 20213, 20254, 22591, 25636, 26486, 28652, 30914, 36244, 37468, 40426, 40508, 45182, 52972, 61828, 80852, 90364, 121771, 172159, 243542, 262769, 293683, 344318, 384047, 487084, 525538, 587366, 688636, 768094, 1051076, 1174732, 1536188, 4992611, 9985222, 19970444]

約数ペア:

[(1, 19970444), (2, 9985222), (4, 4992611), (13, 1536188), (17, 1174732), (19, 1051076), (26, 768094), (29, 688636), (34, 587366), (38, 525538), (41, 487084), (52, 384047), (58, 344318), (68, 293683), (76, 262769), (82, 243542), (116, 172159), (164, 121771), (221, 90364), (247, 80852), (323, 61828), (377, 52972), (442, 45182), (493, 40508), (494, 40426), (533, 37468), (551, 36244), (646, 30914), (697, 28652), (754, 26486), (779, 25636), (884, 22591), (986, 20254), (988, 20213), (1066, 18734), (1102, 18122), (1189, 16796), (1292, 15457), (1394, 14326), (1508, 13243), (1558, 12818), (1972, 10127), (2132, 9367), (2204, 9061), (2378, 8398), (2788, 7163), (3116, 6409), (4199, 4756)]