16981668

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:138

約数の個数: 144

約数和(自身を含む): 51455040

約数和(自身を除く): 34473372

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 19, 22, 33, 36, 37, 38, 44, 57, 61, 66, 74, 76, 99, 111, 114, 122, 132, 148, 171, 183, 198, 209, 222, 228, 244, 333, 342, 366, 396, 407, 418, 444, 549, 627, 666, 671, 684, 703, 732, 814, 836, 1098, 1159, 1221, 1254, 1332, 1342, 1406, 1628, 1881, 2013, 2109, 2196, 2257, 2318, 2442, 2508, 2684, 2812, 3477, 3663, 3762, 4026, 4218, 4514, 4636, 4884, 6039, 6327, 6771, 6954, 7326, 7524, 7733, 8052, 8436, 9028, 10431, 12078, 12654, 12749, 13542, 13908, 14652, 15466, 20313, 20862, 23199, 24156, 24827, 25308, 25498, 27084, 30932, 38247, 40626, 41724, 42883, 46398, 49654, 50996, 69597, 74481, 76494, 81252, 85766, 92796, 99308, 114741, 128649, 139194, 148962, 152988, 171532, 223443, 229482, 257298, 278388, 297924, 385947, 446886, 458964, 471713, 514596, 771894, 893772, 943426, 1415139, 1543788, 1886852, 2830278, 4245417, 5660556, 8490834, 16981668]

約数ペア:

[(1, 16981668), (2, 8490834), (3, 5660556), (4, 4245417), (6, 2830278), (9, 1886852), (11, 1543788), (12, 1415139), (18, 943426), (19, 893772), (22, 771894), (33, 514596), (36, 471713), (37, 458964), (38, 446886), (44, 385947), (57, 297924), (61, 278388), (66, 257298), (74, 229482), (76, 223443), (99, 171532), (111, 152988), (114, 148962), (122, 139194), (132, 128649), (148, 114741), (171, 99308), (183, 92796), (198, 85766), (209, 81252), (222, 76494), (228, 74481), (244, 69597), (333, 50996), (342, 49654), (366, 46398), (396, 42883), (407, 41724), (418, 40626), (444, 38247), (549, 30932), (627, 27084), (666, 25498), (671, 25308), (684, 24827), (703, 24156), (732, 23199), (814, 20862), (836, 20313), (1098, 15466), (1159, 14652), (1221, 13908), (1254, 13542), (1332, 12749), (1342, 12654), (1406, 12078), (1628, 10431), (1881, 9028), (2013, 8436), (2109, 8052), (2196, 7733), (2257, 7524), (2318, 7326), (2442, 6954), (2508, 6771), (2684, 6327), (2812, 6039), (3477, 4884), (3663, 4636), (3762, 4514), (4026, 4218)]