28291068

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{991}}^1$

素因数の和:1075

約数の個数: 72

約数和(自身を含む): 78356096

約数和(自身を除く): 50065028

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 61, 78, 117, 122, 156, 183, 234, 244, 366, 468, 549, 732, 793, 991, 1098, 1586, 1982, 2196, 2379, 2973, 3172, 3964, 4758, 5946, 7137, 8919, 9516, 11892, 12883, 14274, 17838, 25766, 28548, 35676, 38649, 51532, 60451, 77298, 115947, 120902, 154596, 181353, 231894, 241804, 362706, 463788, 544059, 725412, 785863, 1088118, 1571726, 2176236, 2357589, 3143452, 4715178, 7072767, 9430356, 14145534, 28291068]

約数ペア:

[(1, 28291068), (2, 14145534), (3, 9430356), (4, 7072767), (6, 4715178), (9, 3143452), (12, 2357589), (13, 2176236), (18, 1571726), (26, 1088118), (36, 785863), (39, 725412), (52, 544059), (61, 463788), (78, 362706), (117, 241804), (122, 231894), (156, 181353), (183, 154596), (234, 120902), (244, 115947), (366, 77298), (468, 60451), (549, 51532), (732, 38649), (793, 35676), (991, 28548), (1098, 25766), (1586, 17838), (1982, 14274), (2196, 12883), (2379, 11892), (2973, 9516), (3172, 8919), (3964, 7137), (4758, 5946)]