21078014775

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{330247}}^1$

素因数の和:330320

約数の個数: 48

約数和(自身を含む): 37347085824

約数和(自身を除く): 16269071049

約数列:

[1, 3, 5, 15, 23, 25, 37, 69, 75, 111, 115, 185, 345, 555, 575, 851, 925, 1725, 2553, 2775, 4255, 12765, 21275, 63825, 330247, 990741, 1651235, 4953705, 7595681, 8256175, 12219139, 22787043, 24768525, 36657417, 37978405, 61095695, 113935215, 183287085, 189892025, 281040197, 305478475, 569676075, 843120591, 916435425, 1405200985, 4215602955, 7026004925, 21078014775]

約数ペア:

[(1, 21078014775), (3, 7026004925), (5, 4215602955), (15, 1405200985), (23, 916435425), (25, 843120591), (37, 569676075), (69, 305478475), (75, 281040197), (111, 189892025), (115, 183287085), (185, 113935215), (345, 61095695), (555, 37978405), (575, 36657417), (851, 24768525), (925, 22787043), (1725, 12219139), (2553, 8256175), (2775, 7595681), (4255, 4953705), (12765, 1651235), (21275, 990741), (63825, 330247)]