20289568

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1$

素因数の和:210

約数の個数: 96

約数和(自身を含む): 48263040

約数和(自身を除く): 27973472

約数列:

[1, 2, 4, 8, 13, 16, 17, 19, 26, 32, 34, 38, 52, 68, 76, 104, 136, 151, 152, 208, 221, 247, 272, 302, 304, 323, 416, 442, 494, 544, 604, 608, 646, 884, 988, 1208, 1292, 1768, 1963, 1976, 2416, 2567, 2584, 2869, 3536, 3926, 3952, 4199, 4832, 5134, 5168, 5738, 7072, 7852, 7904, 8398, 10268, 10336, 11476, 15704, 16796, 20536, 22952, 31408, 33371, 33592, 37297, 41072, 45904, 48773, 62816, 66742, 67184, 74594, 82144, 91808, 97546, 133484, 134368, 149188, 195092, 266968, 298376, 390184, 533936, 596752, 634049, 780368, 1067872, 1193504, 1268098, 1560736, 2536196, 5072392, 10144784, 20289568]

約数ペア:

[(1, 20289568), (2, 10144784), (4, 5072392), (8, 2536196), (13, 1560736), (16, 1268098), (17, 1193504), (19, 1067872), (26, 780368), (32, 634049), (34, 596752), (38, 533936), (52, 390184), (68, 298376), (76, 266968), (104, 195092), (136, 149188), (151, 134368), (152, 133484), (208, 97546), (221, 91808), (247, 82144), (272, 74594), (302, 67184), (304, 66742), (323, 62816), (416, 48773), (442, 45904), (494, 41072), (544, 37297), (604, 33592), (608, 33371), (646, 31408), (884, 22952), (988, 20536), (1208, 16796), (1292, 15704), (1768, 11476), (1963, 10336), (1976, 10268), (2416, 8398), (2567, 7904), (2584, 7852), (2869, 7072), (3536, 5738), (3926, 5168), (3952, 5134), (4199, 4832)]