20299904

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{491}}^1$

素因数の和:541

約数の個数: 64

約数和(自身を含む): 45165600

約数和(自身を除く): 24865696

約数列:

[1, 2, 4, 8, 16, 17, 19, 32, 34, 38, 64, 68, 76, 128, 136, 152, 272, 304, 323, 491, 544, 608, 646, 982, 1088, 1216, 1292, 1964, 2176, 2432, 2584, 3928, 5168, 7856, 8347, 9329, 10336, 15712, 16694, 18658, 20672, 31424, 33388, 37316, 41344, 62848, 66776, 74632, 133552, 149264, 158593, 267104, 298528, 317186, 534208, 597056, 634372, 1068416, 1194112, 1268744, 2537488, 5074976, 10149952, 20299904]

約数ペア:

[(1, 20299904), (2, 10149952), (4, 5074976), (8, 2537488), (16, 1268744), (17, 1194112), (19, 1068416), (32, 634372), (34, 597056), (38, 534208), (64, 317186), (68, 298528), (76, 267104), (128, 158593), (136, 149264), (152, 133552), (272, 74632), (304, 66776), (323, 62848), (491, 41344), (544, 37316), (608, 33388), (646, 31424), (982, 20672), (1088, 18658), (1216, 16694), (1292, 15712), (1964, 10336), (2176, 9329), (2432, 8347), (2584, 7856), (3928, 5168)]