20199296

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:287

約数の個数: 64

約数和(自身を含む): 44268000

約数和(自身を除く): 24068704

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 61, 64, 104, 122, 128, 199, 208, 244, 398, 416, 488, 793, 796, 832, 976, 1586, 1592, 1664, 1952, 2587, 3172, 3184, 3904, 5174, 6344, 6368, 7808, 10348, 12139, 12688, 12736, 20696, 24278, 25376, 25472, 41392, 48556, 50752, 82784, 97112, 101504, 157807, 165568, 194224, 315614, 331136, 388448, 631228, 776896, 1262456, 1553792, 2524912, 5049824, 10099648, 20199296]

約数ペア:

[(1, 20199296), (2, 10099648), (4, 5049824), (8, 2524912), (13, 1553792), (16, 1262456), (26, 776896), (32, 631228), (52, 388448), (61, 331136), (64, 315614), (104, 194224), (122, 165568), (128, 157807), (199, 101504), (208, 97112), (244, 82784), (398, 50752), (416, 48556), (488, 41392), (793, 25472), (796, 25376), (832, 24278), (976, 20696), (1586, 12736), (1592, 12688), (1664, 12139), (1952, 10348), (2587, 7808), (3172, 6368), (3184, 6344), (3904, 5174)]