20917936

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:186

約数の個数: 80

約数和(自身を含む): 47219200

約数和(自身を除く): 26301264

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 67, 76, 79, 104, 134, 152, 158, 208, 247, 268, 304, 316, 494, 536, 632, 871, 988, 1027, 1072, 1264, 1273, 1501, 1742, 1976, 2054, 2546, 3002, 3484, 3952, 4108, 5092, 5293, 6004, 6968, 8216, 10184, 10586, 12008, 13936, 16432, 16549, 19513, 20368, 21172, 24016, 33098, 39026, 42344, 66196, 68809, 78052, 84688, 100567, 132392, 137618, 156104, 201134, 264784, 275236, 312208, 402268, 550472, 804536, 1100944, 1307371, 1609072, 2614742, 5229484, 10458968, 20917936]

約数ペア:

[(1, 20917936), (2, 10458968), (4, 5229484), (8, 2614742), (13, 1609072), (16, 1307371), (19, 1100944), (26, 804536), (38, 550472), (52, 402268), (67, 312208), (76, 275236), (79, 264784), (104, 201134), (134, 156104), (152, 137618), (158, 132392), (208, 100567), (247, 84688), (268, 78052), (304, 68809), (316, 66196), (494, 42344), (536, 39026), (632, 33098), (871, 24016), (988, 21172), (1027, 20368), (1072, 19513), (1264, 16549), (1273, 16432), (1501, 13936), (1742, 12008), (1976, 10586), (2054, 10184), (2546, 8216), (3002, 6968), (3484, 6004), (3952, 5293), (4108, 5092)]