21825680

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{173}}^1$

素因数の和:288

約数の個数: 80

約数和(自身を含む): 54371520

約数和(自身を除く): 32545840

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 83, 95, 152, 166, 173, 190, 304, 332, 346, 380, 415, 664, 692, 760, 830, 865, 1328, 1384, 1520, 1577, 1660, 1730, 2768, 3154, 3287, 3320, 3460, 6308, 6574, 6640, 6920, 7885, 12616, 13148, 13840, 14359, 15770, 16435, 25232, 26296, 28718, 31540, 32870, 52592, 57436, 63080, 65740, 71795, 114872, 126160, 131480, 143590, 229744, 262960, 272821, 287180, 545642, 574360, 1091284, 1148720, 1364105, 2182568, 2728210, 4365136, 5456420, 10912840, 21825680]

約数ペア:

[(1, 21825680), (2, 10912840), (4, 5456420), (5, 4365136), (8, 2728210), (10, 2182568), (16, 1364105), (19, 1148720), (20, 1091284), (38, 574360), (40, 545642), (76, 287180), (80, 272821), (83, 262960), (95, 229744), (152, 143590), (166, 131480), (173, 126160), (190, 114872), (304, 71795), (332, 65740), (346, 63080), (380, 57436), (415, 52592), (664, 32870), (692, 31540), (760, 28718), (830, 26296), (865, 25232), (1328, 16435), (1384, 15770), (1520, 14359), (1577, 13840), (1660, 13148), (1730, 12616), (2768, 7885), (3154, 6920), (3287, 6640), (3320, 6574), (3460, 6308)]