19985473684

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{163}}^1\times {\mathrm{199}}^1$

素因数の和:474

約数の個数: 144

約数和(自身を含む): 41530048000

約数和(自身を除く): 21544574316

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 67, 76, 121, 134, 163, 199, 209, 242, 268, 326, 398, 418, 484, 652, 737, 796, 836, 1273, 1474, 1793, 2189, 2299, 2546, 2948, 3097, 3586, 3781, 4378, 4598, 5092, 6194, 7172, 7562, 8107, 8756, 9196, 10921, 12388, 13333, 14003, 15124, 16214, 19723, 21842, 24079, 26666, 28006, 32428, 32437, 34067, 39446, 41591, 43684, 48158, 53332, 56012, 64874, 68134, 78892, 83182, 96316, 120131, 129748, 136268, 146663, 154033, 166364, 207499, 240262, 253327, 293326, 308066, 356807, 374737, 414998, 457501, 480524, 506654, 586652, 616132, 616303, 713614, 749474, 829996, 915002, 1013308, 1232606, 1321441, 1427228, 1498948, 1613293, 1830004, 2173279, 2282489, 2465212, 2642882, 2786597, 3226586, 3924877, 4346558, 4564978, 5285764, 5573194, 6453172, 6779333, 7849754, 8693116, 9129956, 11146388, 13558666, 15699508, 23906069, 25107379, 27117332, 30652567, 41292301, 47812138, 50214758, 61305134, 74572663, 82584602, 95624276, 100429516, 122610268, 149145326, 165169204, 262966759, 298290652, 454215311, 525933518, 908430622, 1051867036, 1816861244, 4996368421, 9992736842, 19985473684]

約数ペア:

[(1, 19985473684), (2, 9992736842), (4, 4996368421), (11, 1816861244), (19, 1051867036), (22, 908430622), (38, 525933518), (44, 454215311), (67, 298290652), (76, 262966759), (121, 165169204), (134, 149145326), (163, 122610268), (199, 100429516), (209, 95624276), (242, 82584602), (268, 74572663), (326, 61305134), (398, 50214758), (418, 47812138), (484, 41292301), (652, 30652567), (737, 27117332), (796, 25107379), (836, 23906069), (1273, 15699508), (1474, 13558666), (1793, 11146388), (2189, 9129956), (2299, 8693116), (2546, 7849754), (2948, 6779333), (3097, 6453172), (3586, 5573194), (3781, 5285764), (4378, 4564978), (4598, 4346558), (5092, 3924877), (6194, 3226586), (7172, 2786597), (7562, 2642882), (8107, 2465212), (8756, 2282489), (9196, 2173279), (10921, 1830004), (12388, 1613293), (13333, 1498948), (14003, 1427228), (15124, 1321441), (16214, 1232606), (19723, 1013308), (21842, 915002), (24079, 829996), (26666, 749474), (28006, 713614), (32428, 616303), (32437, 616132), (34067, 586652), (39446, 506654), (41591, 480524), (43684, 457501), (48158, 414998), (53332, 374737), (56012, 356807), (64874, 308066), (68134, 293326), (78892, 253327), (83182, 240262), (96316, 207499), (120131, 166364), (129748, 154033), (136268, 146663)]