21177248

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{571}}^1$

素因数の和:661

約数の個数: 48

約数和(自身を含む): 44684640

約数和(自身を除く): 23507392

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 61, 76, 122, 152, 244, 304, 488, 571, 608, 976, 1142, 1159, 1952, 2284, 2318, 4568, 4636, 9136, 9272, 10849, 18272, 18544, 21698, 34831, 37088, 43396, 69662, 86792, 139324, 173584, 278648, 347168, 557296, 661789, 1114592, 1323578, 2647156, 5294312, 10588624, 21177248]

約数ペア:

[(1, 21177248), (2, 10588624), (4, 5294312), (8, 2647156), (16, 1323578), (19, 1114592), (32, 661789), (38, 557296), (61, 347168), (76, 278648), (122, 173584), (152, 139324), (244, 86792), (304, 69662), (488, 43396), (571, 37088), (608, 34831), (976, 21698), (1142, 18544), (1159, 18272), (1952, 10849), (2284, 9272), (2318, 9136), (4568, 4636)]