289278327260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{18239491}}^1$

素因数の和:18239574

約数の個数: 48

約数和(自身を含む): 664938920352

約数和(自身を除く): 375660593092

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 793, 1220, 1586, 3172, 3965, 7930, 15860, 18239491, 36478982, 72957964, 91197455, 182394910, 237113383, 364789820, 474226766, 948453532, 1112608951, 1185566915, 2225217902, 2371133830, 4450435804, 4742267660, 5563044755, 11126089510, 14463916363, 22252179020, 28927832726, 57855665452, 72319581815, 144639163630, 289278327260]

約数ペア:

[(1, 289278327260), (2, 144639163630), (4, 72319581815), (5, 57855665452), (10, 28927832726), (13, 22252179020), (20, 14463916363), (26, 11126089510), (52, 5563044755), (61, 4742267660), (65, 4450435804), (122, 2371133830), (130, 2225217902), (244, 1185566915), (260, 1112608951), (305, 948453532), (610, 474226766), (793, 364789820), (1220, 237113383), (1586, 182394910), (3172, 91197455), (3965, 72957964), (7930, 36478982), (15860, 18239491)]