20730488840

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{457}}^1\times {\mathrm{3511}}^1$

素因数の和:4015

約数の個数: 128

約数和(自身を含む): 52115270400

約数和(自身を除く): 31384781560

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 68, 76, 85, 95, 136, 152, 170, 190, 323, 340, 380, 457, 646, 680, 760, 914, 1292, 1615, 1828, 2285, 2584, 3230, 3511, 3656, 4570, 6460, 7022, 7769, 8683, 9140, 12920, 14044, 15538, 17366, 17555, 18280, 28088, 31076, 34732, 35110, 38845, 43415, 59687, 62152, 66709, 69464, 70220, 77690, 86830, 119374, 133418, 140440, 147611, 155380, 173660, 238748, 266836, 295222, 298435, 310760, 333545, 347320, 477496, 533672, 590444, 596870, 667090, 738055, 1134053, 1180888, 1193740, 1334180, 1476110, 1604527, 2268106, 2387480, 2668360, 2952220, 3209054, 4536212, 5670265, 5904440, 6418108, 8022635, 9072424, 11340530, 12836216, 16045270, 22681060, 27276959, 30486013, 32090540, 45362120, 54553918, 60972026, 64181080, 109107836, 121944052, 136384795, 152430065, 218215672, 243888104, 272769590, 304860130, 518262221, 545539180, 609720260, 1036524442, 1091078360, 1219440520, 2073048884, 2591311105, 4146097768, 5182622210, 10365244420, 20730488840]

約数ペア:

[(1, 20730488840), (2, 10365244420), (4, 5182622210), (5, 4146097768), (8, 2591311105), (10, 2073048884), (17, 1219440520), (19, 1091078360), (20, 1036524442), (34, 609720260), (38, 545539180), (40, 518262221), (68, 304860130), (76, 272769590), (85, 243888104), (95, 218215672), (136, 152430065), (152, 136384795), (170, 121944052), (190, 109107836), (323, 64181080), (340, 60972026), (380, 54553918), (457, 45362120), (646, 32090540), (680, 30486013), (760, 27276959), (914, 22681060), (1292, 16045270), (1615, 12836216), (1828, 11340530), (2285, 9072424), (2584, 8022635), (3230, 6418108), (3511, 5904440), (3656, 5670265), (4570, 4536212), (6460, 3209054), (7022, 2952220), (7769, 2668360), (8683, 2387480), (9140, 2268106), (12920, 1604527), (14044, 1476110), (15538, 1334180), (17366, 1193740), (17555, 1180888), (18280, 1134053), (28088, 738055), (31076, 667090), (34732, 596870), (35110, 590444), (38845, 533672), (43415, 477496), (59687, 347320), (62152, 333545), (66709, 310760), (69464, 298435), (70220, 295222), (77690, 266836), (86830, 238748), (119374, 173660), (133418, 155380), (140440, 147611)]