21881790

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{739}}^1$

素因数の和:806

約数の個数: 96

約数和(自身を含む): 66493440

約数和(自身を除く): 44611650

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 47, 63, 70, 90, 94, 105, 126, 141, 210, 235, 282, 315, 329, 423, 470, 630, 658, 705, 739, 846, 987, 1410, 1478, 1645, 1974, 2115, 2217, 2961, 3290, 3695, 4230, 4434, 4935, 5173, 5922, 6651, 7390, 9870, 10346, 11085, 13302, 14805, 15519, 22170, 25865, 29610, 31038, 33255, 34733, 46557, 51730, 66510, 69466, 77595, 93114, 104199, 155190, 173665, 208398, 232785, 243131, 312597, 347330, 465570, 486262, 520995, 625194, 729393, 1041990, 1215655, 1458786, 1562985, 2188179, 2431310, 3125970, 3646965, 4376358, 7293930, 10940895, 21881790]

約数ペア:

[(1, 21881790), (2, 10940895), (3, 7293930), (5, 4376358), (6, 3646965), (7, 3125970), (9, 2431310), (10, 2188179), (14, 1562985), (15, 1458786), (18, 1215655), (21, 1041990), (30, 729393), (35, 625194), (42, 520995), (45, 486262), (47, 465570), (63, 347330), (70, 312597), (90, 243131), (94, 232785), (105, 208398), (126, 173665), (141, 155190), (210, 104199), (235, 93114), (282, 77595), (315, 69466), (329, 66510), (423, 51730), (470, 46557), (630, 34733), (658, 33255), (705, 31038), (739, 29610), (846, 25865), (987, 22170), (1410, 15519), (1478, 14805), (1645, 13302), (1974, 11085), (2115, 10346), (2217, 9870), (2961, 7390), (3290, 6651), (3695, 5922), (4230, 5173), (4434, 4935)]