21811648

素因数分解:

$2^6\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1$

素因数の和:261

約数の個数: 56

約数和(自身を含む): 45480224

約数和(自身を除く): 23668576

約数列:

[1, 2, 4, 8, 16, 32, 37, 61, 64, 74, 122, 148, 151, 244, 296, 302, 488, 592, 604, 976, 1184, 1208, 1952, 2257, 2368, 2416, 3904, 4514, 4832, 5587, 9028, 9211, 9664, 11174, 18056, 18422, 22348, 36112, 36844, 44696, 72224, 73688, 89392, 144448, 147376, 178784, 294752, 340807, 357568, 589504, 681614, 1363228, 2726456, 5452912, 10905824, 21811648]

約数ペア:

[(1, 21811648), (2, 10905824), (4, 5452912), (8, 2726456), (16, 1363228), (32, 681614), (37, 589504), (61, 357568), (64, 340807), (74, 294752), (122, 178784), (148, 147376), (151, 144448), (244, 89392), (296, 73688), (302, 72224), (488, 44696), (592, 36844), (604, 36112), (976, 22348), (1184, 18422), (1208, 18056), (1952, 11174), (2257, 9664), (2368, 9211), (2416, 9028), (3904, 5587), (4514, 4832)]